Common problems and what they usually mean
Symptoms overlap. Restricted airflow can look exactly like low refrigerant, and a failed sensor can imitate a dead compressor. Use this index to find your symptom, then call 069 268 0988 so we can confirm it with measurements instead of guesswork.
Heat Pumps
Heat Pumps faults
Heat Pumps Not Heating Water — Montana
Usual causes: low refrigerant charge; reversing valve or four-way valve fault; failed water circulation pump.
Heat Pumps Not Switching On — Montana
Usual causes: tripped breaker or isolator; failed start capacitor or relay; blown control board fuse.
Heat Pumps Leaking Water — Montana
Usual causes: blocked condensate drain line; cracked or displaced drip tray; frozen evaporator melting off.
Heat Pumps Making Noise — Montana
Usual causes: worn fan bearing or bent blade; loose compressor mounting rubbers; debris in the fan housing.
Heat Pumps Compressor Not Starting — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Heat Pumps Fan Not Working — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Heat Pumps Low Temperature — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Heat Pumps Electrical Fault — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Heat Pumps Thermostat Fault — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Heat Pumps Pressure Fault — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Fridges & Freezers
Fridges & Freezers faults
Fridges & Freezers Not Cooling — Montana
Usual causes: refrigerant loss through a pinhole or joint leak; failed or seized compressor; blocked capillary or filter drier.
Fridges & Freezers Too Cold — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Fridges & Freezers Leaking Water — Montana
Usual causes: blocked condensate drain line; cracked or displaced drip tray; frozen evaporator melting off.
Fridges & Freezers Making Noise — Montana
Usual causes: worn fan bearing or bent blade; loose compressor mounting rubbers; debris in the fan housing.
Fridges & Freezers Compressor Not Starting — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Fridges & Freezers Fan Not Working — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Fridges & Freezers Defrost Fault — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Fridges & Freezers Thermostat Fault — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Fridges & Freezers Gas Leak — Montana
Usual causes: corroded evaporator or condenser tubing; failed brazed joint or flare nut; vibration fracture at the compressor discharge.
Fridges & Freezers Low Refrigerant — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Fridges & Freezers Control Board Fault — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Air Conditioning
Air Conditioning faults
Air Conditioning Not Cooling — Montana
Usual causes: refrigerant loss through a pinhole or joint leak; failed or seized compressor; blocked capillary or filter drier.
Air Conditioning Leaking Water — Montana
Usual causes: blocked condensate drain line; cracked or displaced drip tray; frozen evaporator melting off.
Air Conditioning Making Noise — Montana
Usual causes: worn fan bearing or bent blade; loose compressor mounting rubbers; debris in the fan housing.
Air Conditioning Not Switching On — Montana
Usual causes: tripped breaker or isolator; failed start capacitor or relay; blown control board fuse.
Air Conditioning Low Airflow — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Air Conditioning Frozen Indoor Unit — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Air Conditioning Gas Leak — Montana
Usual causes: corroded evaporator or condenser tubing; failed brazed joint or flare nut; vibration fracture at the compressor discharge.
Air Conditioning Low Refrigerant — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Air Conditioning Compressor Fault — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Air Conditioning Fan Fault — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Air Conditioning Electrical Fault — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Cold Rooms
Cold Rooms faults
Cold Rooms Not Cooling — Montana
Usual causes: refrigerant loss through a pinhole or joint leak; failed or seized compressor; blocked capillary or filter drier.
Cold Rooms Temperature Too High — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Cold Rooms Temperature Too Low — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Cold Rooms Compressor Fault — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Cold Rooms Fan Fault — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Cold Rooms Door Seal Problem — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Cold Rooms Gas Leak — Montana
Usual causes: corroded evaporator or condenser tubing; failed brazed joint or flare nut; vibration fracture at the compressor discharge.
Cold Rooms Refrigerant Problem — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Cold Rooms Electrical Fault — Montana
Usual causes: electrical supply or component failure; refrigerant charge outside specification; restricted airflow or water flow.
Fast local response
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Describe the fault to us and we will tell you what it usually means, what it costs to diagnose, and when we can be on site. Email info@reyds.co.za or call now.