Safe Checks You Can Do First
- Thermostat — correct mode (Heat/Cool), setpoint a few degrees past room temperature, fresh batteries if applicable.
- Filter — a clogged return filter is the most common cause of weak performance. Replace if dirty.
- Breakers — check both the outdoor unit and air handler breakers. Reset once only; repeated trips mean a real fault.
- Outdoor unit — clear leaves, snow, and debris; keep 30+ cm clearance on all sides.
- One power cycle — turn the system off at the breaker for two minutes, then restore. If the problem or fault code returns, stop troubleshooting.
What NOT to Touch
Refrigerant lines and service valves (certification required by law), electrical compartments inside either unit (capacitors hold lethal charge after power-off), and the sealed defrost/control boards. DIY work here is dangerous and voids your Bosch warranty.
Symptoms That Mean Call Now
- No heat during a cold snap with young children or elderly residents at home
- Burning or electrical smells from either unit
- Breaker trips immediately every time the system starts
- Ice fully encasing the outdoor coil
- Loud metal-on-metal grinding from the outdoor fan
Talk to a Bosch heat pump specialist — free consultation, honest answers, exact pricing.
📞 Call (604) 330-3812Book a Free ConsultationServing All of Greater Vancouver
Frequently Asked Questions
Why is my Bosch heat pump blowing cold air in heating mode?
Brief cool air during defrost is normal. Continuous cold air points to a reversing valve fault, low refrigerant, or a control issue — book a diagnostic if it persists beyond one cycle.
Why is my Bosch heat pump covered in ice?
Light winter frost is normal and the defrost cycle clears it. Ice encasing the coil means a defrost or airflow fault — shut the unit off and call (604) 330-3812 to prevent fan and compressor damage.
My Bosch thermostat shows a fault code. Can I fix it myself?
Power-cycle once at the breaker. If the code returns, leave it — codes point to sensor, communication, or pressure faults that need instruments to diagnose properly. Note the code and call us; it speeds up the repair.
Why does my Bosch heat pump run constantly?
In deep cold, long run times are normal for inverter systems — they modulate rather than stop-start. Constant running in mild weather suggests low refrigerant, airflow restriction, or sizing issues worth a professional look.
HeatLand Heating & Cooling — licensed and insured, serving Greater Vancouver since 1999.