Gree Heat Pump Error Codes — Meanings, Causes & Repair in Greater Vancouver

Seeing a fault code on your Gree heat pump? This guide explains what the most common Gree heat pump error codes mean, what’s safe to check yourself, and when to call HeatLand’s licensed HVAC technicians for Gree heat pump repair across Metro Vancouver and the Fraser Valley.

The codes below apply across common Gree models (Sapphire, Livo, Vireo, Flexx). Meanings follow Gree’s documented fault codes — always confirm against your unit’s own manual, because exact wording can vary by model, control board and firmware.

How to read Gree heat pump error codes

Alphanumeric codes shown on the indoor unit's LED display, the wireless remote's display, or (on some models) signalled by blinking indicator lights. Letter prefixes group the fault type: E = system protection, F = temperature-sensor fault, H = compressor/module/airflow protection, U = motor/valve fault, C = configuration, P/EE = board/overcurrent. Some are status indicators (not faults) and clear on their own.

Gree heat pump error codes & what they mean

These are the Gree heat pump codes our Greater Vancouver technicians see most. Anything marked pro repair involves electrical, refrigerant, sensor or control-board work that must be done by a licensed HVAC technician — never open the indoor/outdoor unit or refrigerant lines yourself.

Code	What it usually means	Common causes	Safe to check yourself
H1	Outdoor unit defrosting (normal operating status, not a fault). In heating mode the unit temporarily reverses to melt frost from the outdoor coil; warm-air delivery pauses briefly DIY-checkable	Normal automatic defrost cycle during cold/damp heating operation; Frost or ice accumulation on the outdoor coil being cleared; Frequent or stuck-on defrost can indicate a sensor or refrigerant-charge issue needing a tech	Wait several minutes — heating normally resumes when the cycle finishes; Confirm the outdoor unit and coil are clear of snow, ice, leaves, and obstructions; If H1 stays displayed for a long time or repeats very frequently, note it for a licensed technician
F0	System refrigerant shortage / blockage protection (lack of fluorine or flow blockage). The unit detects low refrigerant or restricted refrigerant flow and shuts down to protect the compressor pro repair	Refrigerant leak or undercharge; Restricted or blocked refrigerant flow; Indoor coil temperature sensor not reading correctly	Confirm the outdoor unit airflow is unobstructed and coils are not iced over; Clean or replace dirty indoor filters; Power the system off and on once via the remote or breaker; if F0 returns, call a licensed technician (refrigerant work is tech-only)
F1	Indoor ambient (room) temperature sensor fault — sensing bulb open or short-circuited pro repair	Failed or out-of-range indoor ambient temperature sensor; Disconnected, loose, or damaged sensor wiring/connector; Open or short circuit in the sensor	Power the unit off at the remote/breaker, wait, and restart once; If the code returns, schedule a licensed technician for sensor diagnosis/replacement
F2	Indoor evaporator (coil) temperature sensor fault — sensing bulb open or short-circuited pro repair	Failed indoor evaporator coil temperature sensor; Loose or damaged sensor connector; Open or short circuit in the sensor	Restart the unit once via the remote or breaker; If the code returns, call a licensed technician for sensor replacement
F3	Outdoor ambient temperature sensor fault — sensing bulb open or short-circuited pro repair	Failed outdoor ambient temperature sensor; Loose or corroded outdoor sensor connection; Open or short circuit in the sensor	Restart the unit once via the remote or breaker; If the code returns, call a licensed technician (the outdoor unit must be opened by a pro)
F4	Outdoor condenser (coil) temperature sensor fault — sensing bulb open or short-circuited pro repair	Failed outdoor condenser coil temperature sensor; Loose or corroded sensor connection; Open or short circuit in the sensor	Restart the unit once via the remote or breaker; If the code returns, call a licensed technician for diagnosis
F5	Compressor discharge temperature sensor fault — sensing bulb open or short-circuited pro repair	Failed compressor discharge temperature sensor; Loose or damaged sensor connector; Open or short circuit in the sensor	Restart the unit once via the remote or breaker; If the code returns, call a licensed technician for sensor replacement
E0	Whole-unit voltage drop / frequency reduction protection (low supply-voltage protection that throttles or stops the unit) pro repair	Low or unstable household supply voltage; Brownout or weak electrical service; Loose or undersized power wiring	Verify the breaker is fully on and the disconnect is closed; Note whether other appliances also dim/struggle (a sign of a supply issue); If it persists, have a licensed technician or electrician check the supply
E1	System high-pressure protection — the unit shut down on excessive refrigerant high-side pressure pro repair	Dirty or blocked outdoor condenser coil / restricted outdoor airflow; Refrigerant overcharge; Extreme high ambient temperature or failed outdoor fan	Clear leaves, snow, and debris from around the outdoor unit and rinse visible coil dirt gently with a hose (power off); Make sure nothing is blocking the outdoor fan discharge; Restart once; if E1 returns, call a licensed technician (pressure/charge work is tech-only)
E2	Indoor anti-freeze (freeze-up) protection — the indoor coil got too cold and the unit paused to prevent icing DIY-checkable	Dirty indoor filter or blocked indoor airflow; Indoor fan set too low or fan fault; Low refrigerant charge	Clean or replace the indoor air filter; Make sure supply/return airflow at the indoor unit is unobstructed and the fan speed is not set to minimum; Let any visible ice melt, then restart; if E2 returns, call a licensed technician
E3	System low-pressure protection — the unit shut down on low refrigerant low-side pressure pro repair	Refrigerant leak or undercharge; Blocked filter or restricted indoor airflow; Closed/partially closed service valve	Clean or replace the indoor filter and confirm airflow is unobstructed; Check that the outdoor unit is clear of obstructions; If E3 returns after a single restart, call a licensed technician (refrigerant diagnosis is tech-only)
E4	Compressor discharge temperature too high — protection shutdown pro repair	Low refrigerant charge or restricted flow; Blocked outdoor airflow / dirty condenser coil; Overloaded compressor or metering-device fault	Clear obstructions and debris around the outdoor unit; Clean or replace dirty filters; Allow the unit to cool, restart once; if E4 returns, call a licensed technician
E5	Overcurrent / low-voltage protection — the unit tripped on abnormal current draw, often linked to unstable or low supply voltage pro repair	High or unstable line voltage, or low supply voltage; Dirty/blocked coil causing the compressor to draw high current; Compressor or electrical-component fault	Confirm the breaker is fully on and not shared/overloaded; Clean filters and clear outdoor-unit obstructions; Restart once; if E5 returns, call a licensed technician (electrical diagnosis is tech-only)
E6	Communication failure between the indoor and outdoor units (no signal) pro repair	Incorrect, loose, or damaged interconnecting wiring between indoor and outdoor units; Reversed L/N or signal-wire connection; Indoor or outdoor control board fault	Power the system fully off at the breaker, wait, and restart once; Confirm nothing recently disturbed the outdoor wiring (no opening of covers); If E6 persists, call a licensed technician to inspect wiring and boards
E7	Mode conflict — indoor units (or settings) are calling for incompatible modes at the same time (e.g., one set to heat while another calls for cool on a shared system) DIY-checkable	Different indoor zones set to conflicting modes on a single outdoor unit; Mode setting incompatible with current system state	Set all indoor units/zones to the same mode (all Heat or all Cool) on the remotes; Re-select a single mode and restart; the code typically clears; If it persists with matching modes, call a licensed technician
E8	High-temperature protection — the system shut down on excessive temperature (overheat / high-temperature-resistant protection) pro repair	Restricted airflow or blocked coils causing overheating; Incorrect refrigerant charge or metering-device malfunction; Very high ambient conditions	Clean or replace filters and clear all airflow obstructions indoors and outdoors; Power off about 10 minutes, then restart once; If E8 returns, call a licensed technician
E9	Cold-air-prevention protection — in heating, warm-air delivery is held off until the coil is warm enough (often a normal status during heating start-up) DIY-checkable	Normal cold-blow prevention at the start of a heating cycle; Coil not yet warm enough to deliver heated air	Wait a few minutes — warm air typically begins once the coil heats up; Confirm the unit is set to Heat with a temperature above room temperature; If no heat ever follows, call a licensed technician
EE	EEPROM / control-board memory malfunction pro repair	Corrupted control-board memory; Control (PCB) board fault	Power the system fully off at the breaker, wait, and restart once; If EE returns, call a licensed technician (board service required)
H3	Compressor overload protection — the overload device tripped due to excessive load or temperature on the compressor pro repair	Low refrigerant or restricted flow; Dirty/blocked outdoor coil or restricted airflow; Locked rotor, weak start component, or supply-voltage problem	Clear obstructions and debris from the outdoor unit; Clean or replace filters; Allow the unit to cool, restart once; if H3 returns, call a licensed technician
H4	System abnormality — anti-high-temperature shutdown protection (the system repeatedly hit an over-temperature/overload condition and locked out) pro repair	Restricted airflow or dirty coils causing repeated overheating; Refrigerant charge or flow problem; Outdoor fan or load issue	Clean filters and clear all indoor and outdoor airflow obstructions; Power off about 10 minutes, then restart once; If H4 returns, call a licensed technician
H5	IPM (Intelligent Power Module) protection — the inverter power module tripped on overcurrent/over-temperature pro repair	Blocked airflow or dirty coils overloading the compressor; Unstable or out-of-range supply voltage; Inverter board / IPM module fault	Clean filters and clear obstructions around the indoor and outdoor units; Confirm the breaker is fully on and the supply is not shared/overloaded; Power off about 10 minutes, restart once; if H5 returns, call a licensed technician
H6	No indoor fan motor feedback — the indoor (PG) fan motor is not reporting/turning (fan blocked or motor fault) pro repair	Indoor fan blade obstructed or jammed; Loose or damaged indoor fan motor wiring/connector; Failed indoor fan motor or control board	Power off and confirm nothing visible (toys, debris) is jamming the indoor blower wheel from outside the unit — do not open the housing; Restart once via the remote/breaker; If H6 returns, call a licensed technician for motor diagnosis
U7	Reversing (4-way) valve malfunction — the valve that switches between heating and cooling is not changing over correctly pro repair	Stuck or failed reversing valve; Failed reversing-valve solenoid coil; Low refrigerant charge preventing changeover	Restart the unit once via the remote or breaker; If U7 returns or the unit won't switch between heat and cool, call a licensed technician
U8	Indoor PG fan motor zero-crossing detection failure — the control board cannot detect the AC zero-crossing signal for the indoor fan motor pro repair	Indoor fan motor or its connection fault; Indoor control (PCB) board fault; Wiring/zero-crossing signal problem	Power the unit fully off at the breaker, wait, and restart once; If U8 returns, call a licensed technician (board/motor diagnosis required)
C5	Jumper cap fault / system configuration error — the control board's configuration jumper cap is missing, wrong, or damaged, or the indoor and outdoor units are not compatible pro repair	No jumper cap installed on the control board; Incorrect or damaged jumper cap; Mismatched / incompatible indoor and outdoor units	Note whether the unit was recently serviced or a board was replaced; Do not open the unit — this is a board configuration fault; Call a licensed technician to verify the correct jumper cap and unit pairing
P5	Compressor overcurrent protection — the compressor drew current above the allowed limit and tripped pro repair	Dirty/blocked coil or restricted airflow overloading the compressor; Low/unstable supply voltage; Compressor or inverter-board fault	Clean filters and clear obstructions from the indoor and outdoor units; Confirm a stable, dedicated power supply (breaker fully on); Restart once; if P5 returns, call a licensed technician

Gree heat pump codes we get called for most

H1 — Outdoor unit defrosting (normal operating status, not a fault). In heating mode the unit temporarily reverses to melt frost from the outdoor coil; warm-air delivery pauses briefly

Typical causes include normal automatic defrost cycle during cold/damp heating operation; frost or ice accumulation on the outdoor coil being cleared; frequent or stuck-on defrost can indicate a sensor or refrigerant-charge issue needing a tech. A few things are safe to check yourself (Wait several minutes — heating normally resumes when the cycle finishes; Confirm the outdoor unit and coil are clear of snow, ice, leaves, and obstructions), but the repair is a licensed HVAC technician job. HeatLand diagnoses and fixes H1 on Gree heat pumps throughout Greater Vancouver.

F1 — Indoor ambient (room) temperature sensor fault — sensing bulb open or short-circuited

Typical causes include failed or out-of-range indoor ambient temperature sensor; disconnected, loose, or damaged sensor wiring/connector; open or short circuit in the sensor. A few things are safe to check yourself (Power the unit off at the remote/breaker, wait, and restart once; If the code returns, schedule a licensed technician for sensor diagnosis/replacement), but the repair is a licensed HVAC technician job. HeatLand diagnoses and fixes F1 on Gree heat pumps throughout Greater Vancouver.

F0 — System refrigerant shortage / blockage protection (lack of fluorine or flow blockage). The unit detects low refrigerant or restricted refrigerant flow and shuts down to protect the compressor

Typical causes include refrigerant leak or undercharge; restricted or blocked refrigerant flow; indoor coil temperature sensor not reading correctly. A few things are safe to check yourself (Confirm the outdoor unit airflow is unobstructed and coils are not iced over; Clean or replace dirty indoor filters), but the repair is a licensed HVAC technician job. HeatLand diagnoses and fixes F0 on Gree heat pumps throughout Greater Vancouver.

H6 — No indoor fan motor feedback — the indoor (PG) fan motor is not reporting/turning (fan blocked or motor fault)

Typical causes include indoor fan blade obstructed or jammed; loose or damaged indoor fan motor wiring/connector; failed indoor fan motor or control board. A few things are safe to check yourself (Power off and confirm nothing visible (toys, debris) is jamming the indoor blower wheel from outside the unit — do not open the housing; Restart once via the remote/breaker), but the repair is a licensed HVAC technician job. HeatLand diagnoses and fixes H6 on Gree heat pumps throughout Greater Vancouver.

Is it safe to keep running a Gree heat pump with a fault code?

Most Gree fault codes put the heat pump into a safe lockout for a reason. You can safely check the basics — the power and breaker on, the indoor filter clean, the outdoor unit clear of snow, ice and debris, and the remote set to the correct mode and temperature — and restart it once. If the code returns, stop and book a technician. Mini-split and heat-pump faults are electrical and refrigerant issues — never open the indoor or outdoor unit, and never touch the wiring or refrigerant lines yourself.

Gree heat pump repair across Greater Vancouver

HeatLand has kept Metro Vancouver homes comfortable since 1999. Our licensed, insured technicians diagnose and repair Gree heat pumps — sensor and thermistor errors, indoor-to-outdoor communication faults, fan and compressor problems, refrigerant and pressure faults, and control-board issues — including units we didn’t install. We’re brand-agnostic, carry common parts, and give you an honest repair-or-replace assessment with upfront pricing and a free estimate. If your heat pump is beyond economical repair, we’ll show you right-sized, high-efficiency replacement options and the rebates available.

Need it sorted fast? We offer priority emergency heat pump repair. Explore Heat Pump services, browse all heat pump error codes by brand, or request a free estimate.

Gree heat pump service areas

We repair Gree heat pumps across Greater Vancouver and the Fraser Valley, including:

Gree heat pump error code FAQs

Can I reset my Gree heat pump myself?

Yes — power-cycling the unit at the breaker once is generally safe after you’ve checked the basics (the power and breaker on, the indoor filter clean, the outdoor unit clear of snow, ice and debris, and the remote set to the correct mode and temperature). If the heat pump faults again right away, stop and note the code — repeatedly resetting a heat pump that keeps locking out can mask a real problem. Call a licensed HVAC technician to diagnose it.

What does the Gree F0 code mean?

On Gree heat pumps, F0 commonly indicates system refrigerant shortage / blockage protection (lack of fluorine or flow blockage). the unit detects low refrigerant or restricted refrigerant flow and shuts down to protect the compressor. Confirm the exact meaning against your unit’s manual — codes can vary by model and series — and have the repair done by a licensed HVAC technician. HeatLand fixes this across Greater Vancouver.

Do you repair Gree heat pumps you didn’t install?

Yes. HeatLand is brand-agnostic and services Gree heat pumps throughout Metro Vancouver and the Fraser Valley, whether or not we installed the unit. We carry common parts and give you an honest repair-or-replace assessment.

Is a Gree heat pump fault code an emergency?

No heat in cold weather or no cooling in a heat wave is worth treating urgently. For priority heat pump repair across Greater Vancouver, call (604) 330-3812.

How much does Gree heat pump repair cost in Vancouver?

It depends on the fault. Many Gree codes point to sensors, thermistors, capacitors or control parts — usually far cheaper than replacement. We give upfront pricing and a free estimate before any work.

More Heat Pump error-code guides

HeatLand repairs every major heat pump brand across Greater Vancouver. More brand guides: