Amana Air Conditioner Error Codes — Meanings, Causes & Repair in Greater Vancouver

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

The codes below apply across common Amana models (ComfortNet, standard). Meanings follow Amana’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 Amana air conditioner error codes

Amana central ACs share the Goodman/Daikin platform. Basic single-stage Amana ACs (e.g. ASXC/ASX/ANX 'standard' split units) have NO on-unit fault-code display – the outdoor contactor simply energizes or not, and most AC-related faults are reported by the matched indoor air-handler or gas-furnace control board (2-character 7-segment diagnostic characters) rather than by the condenser. The premium communicating variable-speed inverter line (ComfortNet-compatible, e.g. AVXC20) shows numbered E-codes on the outdoor control-board 7-segment LED AND scrolls a plain-language ClimateTalk fault message on the ComfortNet / CTK0x communicating thermostat. Outdoor inverter faults use E-codes (E11-E55) plus Ed0-Ed3 data/configuration codes; communicating air-handler faults use 2-character codes (Ed, E5, EF, b0/b9, d0/d1, C1/C2, etc.). The board stores the six most recent system faults (7-segment Screen One / FAULT RECALL), and the ComfortNet thermostat lists recent faults under Equipment Status / Diagnostics. Codes here are from official Amana AVXC20 outdoor and AVPTC**14 air-handler service/installation manuals; meanings can vary by model and major revision.

Amana air conditioner error codes & what they mean

These are the Amana air conditioner 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
E11 / RUN SYS TEST	Thermostat/board message that the required start-up System Verification Test must be run after install or a data/board change (commissioning step, not a hardware failure) pro repair	Initial system test not yet completed after installation; Control board replaced or shared data changed	No action needed by the homeowner; the installer runs the System Verification Test from the ComfortNet menu
E13 / HI PRESSURE M	High pressure (minor) – the unit is experiencing high-pressure faults pro repair	Blocked or dirty condenser coil; Service (stop) valve not fully open; Refrigerant overcharge	Clear leaves, grass and debris from around the outdoor condenser and keep airflow paths open; Set the thermostat to Cool and try one single power cycle at the breaker
E15 / LOW PRESSURE C	Low pressure (critical) – the unit is experiencing low-pressure faults pro repair	Service (stop) valve not fully open; Restriction in the refrigerant lines; Low refrigerant charge / refrigerant leak	Replace a dirty air filter and make sure indoor supply/return airflow is not blocked; Set the thermostat to Cool and retry once
E17 / COMPRESSOR FAIL	Compressor failure – the unit is experiencing frequent compressor faults pro repair	Service (stop) valve not fully open; Compressor wiring fault / lost phase; Compressor motor failure	Try one single power cycle at the breaker
E19 / PCB OR FAN FAIL	Outdoor control board and/or outdoor fan motor fault pro repair	Obstruction in fan rotation; Outdoor fan motor not connected properly; Outdoor fan not running	Check the outdoor fan grille for debris (leaves/branches) and clear obstructions; Try one single power cycle at the breaker
E21 / EEV CTRL FAIL	Electronic expansion valve (EEV) control fault pro repair	EEV not connected properly; Faulty EEV or control board	No homeowner fix; requires technician service
E22 / HI DISCH TEMP	High discharge temperature – frequent high discharge-temperature faults pro repair	Discharge thermistor inoperable or improperly positioned/connected; Low refrigerant charge or overcharge; Faulty compressor	Make sure the outdoor condenser is clear of debris; Try one single power cycle at the breaker
E23 / DISCH TEMP FAIL	Discharge temperature sensor out of range / sensor failure pro repair	Discharge thermistor inoperable or improperly connected	No homeowner fix; requires technician sensor service
E24 / HPS OPEN	The high-pressure switch is open pro repair	High-pressure switch inoperable; Underlying high-pressure condition (dirty coil, blocked condenser, overcharge, outdoor fan not running)	Clear debris from around the outdoor condenser; Set the thermostat to Cool and try one single power cycle at the breaker
E26 / PRESSURE SENSOR	Pressure sensor not reacting properly / pressure sensor malfunction pro repair	Pressure sensor inoperable or not properly connected	No homeowner fix; requires technician service
E28 / COIL TEMP FAIL2	Outdoor coil temperature sensor out of range / sensor failure pro repair	Outdoor coil thermistor inoperable or improperly connected	No homeowner fix; requires technician sensor service
E29 / LIQ TEMP FAIL	Liquid line temperature sensor out of range / sensor failure pro repair	Liquid-line thermistor inoperable or improperly connected	No homeowner fix; requires technician sensor service
E31 / HI LEAK CURRENT	High leakage current detected (high-voltage leakage to ground) pro repair	Improper ground; Faulty compressor	Turn the unit off and leave it off; this is an electrical fault – call a licensed technician
E32 / HI TEMP CTRL1	High temperature fault on the outdoor control board pro repair	Outdoor control board overheating; Restricted airflow around the outdoor unit electronics; Faulty control board	Make sure the outdoor unit is clear of debris and has open airflow; Try one single power cycle at the breaker
E34 / CURRENT SPIKE	High current condition detected, indicating potential for a short circuit pro repair	Current spike in supply; Service (stop) valve not fully open; Compressor wiring fault / lost phase	Leave the unit off; this is an electrical fault – call a licensed technician
E35 / HIGH CURRENT	High current condition detected on the outdoor control board pro repair	Short-circuit condition; Service (stop) valve not fully open; Refrigerant overcharge	Leave the unit off; this is an electrical fault – call a licensed technician
E36 / STARTUP ERROR	Abnormal condition detected during the compressor startup procedure pro repair	Service (stop) valve not fully open; Compressor or wiring problem; Faulty control board	Try one single power cycle at the breaker
E38 / COMP VOLTAGE	Voltage-related issue with the compressor detected pro repair	Compressor wiring fault; Supply voltage problem; Faulty control board or compressor	Check the breaker for the AC is fully ON (not tripped); Try one single power cycle at the breaker
E40 / COMP MISMATCH	Compressor requirement differs from the installed compressor capability (mismatch) pro repair	Incorrect shared data / configuration; Wrong board or compressor for the unit	No homeowner fix; requires technician data/configuration service
E41 / LOW REFRIGERANT	Control detected a low refrigerant condition pro repair	Refrigerant leak; Low refrigerant charge; Thermistors inoperable or not properly connected	No homeowner fix; refrigerant work must be done by a licensed technician
E42 / LOW LINE VOLT	Control detected a low power-supply voltage condition pro repair	Low line voltage supply; Tripped breaker / blown fuse; Utility supply issue	Check the breaker for the AC is fully ON (not tripped); Try one single power cycle at the breaker
E43 / HIGH LINE VOLT	Control detected a high power-supply voltage condition pro repair	High line voltage supply; Utility supply issue	No homeowner fix; line-voltage issue requires a technician/utility
E44 / OP TEMP RANGE	Outdoor temperature is outside the recommended operating range; the unit may still operate normally DIY-checkable	Ambient air temperature too high or too low for normal operation	Wait and retry during a more moderate outdoor temperature; Try one single power cycle at the breaker
E45 / NO COOLING TEST	Unable to start the cooling-mode test because indoor heat is on (commissioning message, not a failure) pro repair	Indoor heat active during a technician test	No homeowner action; the technician turns off indoor heat to run the test
E47 / NO SYS VER TEST	Unable to start the system verification test because indoor heat is on (commissioning message, not a failure) pro repair	Indoor heat active during the system verification test	No homeowner action; the technician turns off indoor heat to run the test
E48 / NO PUMP DOWN	Control unable to enter Pump Down Mode because indoor heat is on (service message, not a failure) pro repair	Indoor heat active during a technician pump-down procedure	No homeowner action; technician procedure only
E49 / NO CHARGE MODE	Control unable to enter Charging Mode because indoor heat is on (service message, not a failure) pro repair	Indoor heat active during a technician charging procedure	No homeowner action; technician procedure only
E50 / LINE VOLT CTRL	Voltage issue detected on the outdoor control board pro repair	High or low voltage from supply; Faulty control board	Check the breaker is fully ON; Try one single power cycle at the breaker
E51 / OD COMM ERROR	Communication issue detected by the outdoor control board (communicating/ComfortNet system) pro repair	Communication wiring disconnected or loose; Wiring damage between indoor and outdoor units	Try one single power cycle at the breaker
E52 / COMP FAIL MINOR	Frequent compressor faults detected (minor) pro repair	Service (stop) valve not fully open; Compressor wiring issue; Compressor problem	Try one single power cycle at the breaker
E54 / HI DIS TEMP MIN	Frequent high discharge-temperature faults (minor) pro repair	Discharge thermistor problem; Low refrigerant charge or overcharge; Restricted condenser airflow	Make sure the outdoor condenser is clear of debris; Try one single power cycle at the breaker
Ed0 / NO ID AIRFLOW	Outdoor control sees estimated indoor airflow near 0 CFM (indoor blower not delivering airflow) pro repair	Indoor blower not running; Severely restricted filter/ductwork; Communication or wiring issue with the indoor unit	Replace a dirty air filter and open all supply/return vents; Try one single power cycle at the breaker
Ed1 / INVALID DATA	Outdoor control board lacks the appropriate shared data needed to operate pro repair	Missing or invalid shared data on the network; Communicating system not commissioned	No homeowner fix; requires technician data programming
Ed2 / INVALID SYSTEM	Airflow requirement exceeds the indoor subsystem capability (system mismatch) pro repair	Indoor and outdoor unit not matched for required airflow; Incorrect shared data	No homeowner fix; requires technician configuration
Ed3 / INVALID CONFIG / INVALID MC DATA	Mismatch between shared data and hardware, or rejected memory-card/data-loader data pro repair	Shared data incompatible with the installed hardware; Data-loader/memory-card data rejected or wrong	No homeowner fix; requires technician data programming
Ed (air handler) / FUSE OPEN	Control fuse open on the communicating air-handler board (24V control fuse blown) pro repair	Blown control-board fuse; Short in the 24V control wiring; Loose or open low-voltage connection	Confirm the outdoor disconnect and indoor breaker are ON; Set the thermostat to Cool with a low setpoint; Try one single power cycle at the breaker
EF (air handler) / BLOWER MOTOR COMMUNICATION ERROR	Communication error between the air-handler control board and the blower motor pro repair	Loose or incorrect blower motor wiring; Power interruption / low voltage; Faulty control board or blower motor	Try one single power cycle at the breaker
P2 (air handler) / BLOWER MOTOR NOT RUNNING	Indoor blower motor is not running pro repair	Fan/motor obstruction; Power interruption / low voltage; Loose or incorrect wiring	Check and replace a dirty air filter; Make sure supply and return vents are open and unblocked; Try one single power cycle at the breaker
dF (air handler) / LOW INDOOR AIRFLOW	Estimated indoor airflow is lower than the airflow requirement (low indoor airflow) pro repair	Excessive duct static pressure (restricted ductwork/filter); Failed indoor blower motor; Blower motor not properly connected	Replace a dirty air filter; Open all supply and return vents and clear any blockage; Make sure the return grille is not obstructed
C1 (air handler) / DATA NOT ON NETWORK	The air-handler control board does not have the shared data it needs on the network to operate pro repair	No shared data loaded on the network; Communicating system not yet commissioned	No homeowner fix; requires technician data programming
C2 (air handler) / INVALID DATA ON NETWORK	Invalid shared data on the network for the air-handler control pro repair	Wrong or invalid shared data on the network	No homeowner fix; requires technician data programming

Amana air conditioner codes we get called for most

E19 / PCB OR FAN FAIL — Outdoor control board and/or outdoor fan motor fault

Typical causes include obstruction in fan rotation; outdoor fan motor not connected properly; outdoor fan not running. A few things are safe to check yourself (Check the outdoor fan grille for debris (leaves/branches) and clear obstructions; Try one single power cycle at the breaker), but the repair is a licensed HVAC technician job. HeatLand diagnoses and fixes E19 / PCB OR FAN FAIL on Amana air conditioners throughout Greater Vancouver.

E23 / DISCH TEMP FAIL — Discharge temperature sensor out of range / sensor failure

Typical causes include discharge thermistor inoperable or improperly connected. A few things are safe to check yourself (No homeowner fix; requires technician sensor service), but the repair is a licensed HVAC technician job. HeatLand diagnoses and fixes E23 / DISCH TEMP FAIL on Amana air conditioners throughout Greater Vancouver.

E17 / COMPRESSOR FAIL — Compressor failure – the unit is experiencing frequent compressor faults

Typical causes include service (stop) valve not fully open; compressor wiring fault / lost phase; compressor motor failure. A few things are safe to check yourself (Try one single power cycle at the breaker), but the repair is a licensed HVAC technician job. HeatLand diagnoses and fixes E17 / COMPRESSOR FAIL on Amana air conditioners throughout Greater Vancouver.

E13 / HI PRESSURE M — High pressure (minor) – the unit is experiencing high-pressure faults

Typical causes include blocked or dirty condenser coil; service (stop) valve not fully open; refrigerant overcharge. A few things are safe to check yourself (Clear leaves, grass and debris from around the outdoor condenser and keep airflow paths open; Set the thermostat to Cool and try one single power cycle at the breaker), but the repair is a licensed HVAC technician job. HeatLand diagnoses and fixes E13 / HI PRESSURE M on Amana air conditioners throughout Greater Vancouver.

Is it safe to keep running a Amana air conditioner with a fault code?

Most Amana fault codes put the air conditioner into a safe lockout for a reason. You can safely check the basics — the power and breaker on, the air filter clean, the outdoor condenser clear of debris, and the thermostat set to cool — and restart it once. If the code returns, stop and book a technician. Air-conditioner faults are electrical and refrigerant issues — never open the unit or touch the wiring or refrigerant lines yourself.

Amana air conditioner repair across Greater Vancouver

HeatLand has kept Metro Vancouver homes comfortable since 1999. Our licensed, insured technicians diagnose and repair Amana air conditioners — sensor and thermistor errors, 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 air conditioner 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 air conditioner repair. Explore Air Conditioner services, browse all air conditioner error codes by brand, or request a free estimate.

Amana air conditioner service areas

We repair Amana air conditioners across Greater Vancouver and the Fraser Valley, including:

Amana air conditioner error code FAQs

Can I reset my Amana air conditioner 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 air filter clean, the outdoor condenser clear of debris, and the thermostat set to cool). If the air conditioner faults again right away, stop and note the code — repeatedly resetting a air conditioner that keeps locking out can mask a real problem. Call a licensed HVAC technician to diagnose it.

What does the Amana E17 / COMPRESSOR FAIL code mean?

On Amana air conditioners, E17 / COMPRESSOR FAIL commonly indicates compressor failure – the unit is experiencing frequent compressor faults. 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 Amana air conditioners you didn’t install?

Yes. HeatLand is brand-agnostic and services Amana air conditioners 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 Amana air conditioner fault code an emergency?

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

How much does Amana air conditioner repair cost in Vancouver?

It depends on the fault. Many Amana 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 Air Conditioner error-code guides

HeatLand repairs every major air conditioner brand across Greater Vancouver. More brand guides: