Calorex heat pumps become more and more commonly used now. It means that the seller makes good stuff. However, it’s better to be ready for the unexpected. It means that if you see the problem in its functioning, don’t panic and try to do the repair by yourself. To achieve such goal, turn to the troubleshooting manual given here. It’s a nice stuff which is made in order to fix the fault.
Calorex AW631 Heat Pump Troubleshooting
| Problem | Description | Solution |
|---|
| INDICATOR LAMPS "AW" POOL HEATERS | MAINS - RED | Electrical supply on |
| FAULT - AMBER | Internal or external fault condition |
| DEFROST - WHITE | Defrost Mode |
| INDICATOR LAMPS "AW" HEATER CHILLER | MAINS (SWITCH) - RED | Electrical supply on. Also includes ON/OFF rocker switch. |
| FAULT - AMBER | Internal or external fault condition |
| DEFROST - WHITE | Defrost Mode on water heating Chill Limit Fault on water cooling |
| INDICATOR LAMPS "WA" CHILLER | MAINS (SWITCH) - RED | Electrical supply on. Also includes ON/OFF rocker switch. |
| FAULT - AMBER | Internal or external fault condition |
| DEFROST - WHITE | Chill Limit Fault on water cooling |
Calorex 1531 Heat Pump Troubleshooting
| Problem | LED | Flashes | Solution |
|---|
| UNIT DOES NOT OPERATE | MAINS - RED | OFF | Check mains supply- external fuses - isolator etc. |
| FAULT - AMBER | OFF | |
| DEFROST - WHITE | OFF | |
| WATER FLOW - GREEN | OFF | |
| MAINS - RED | ON | Water flow inadequate |
| FAULT - AMBER | OFF | |
| DEFROST - WHITE | OFF | |
| WATER FLOW - GREEN | OFF | |
| MAINS - RED | ON | |
| FAULT - AMBER | OFF | |
| DEFROST - WHITE | OFF | |
| WATER FLOW - GREEN | OFF | |
| MAINS - RED | ON | Check water and air flows are not restricted. Check thermal cut out on Soft Start if fitted and that air flow is not restricted. Check unit control fuse on single phase machine. Check MCB on three phase machine. |
| FAULT - AMBER | ON | |
| DEFROST - WHITE | OFF | |
| WATER FLOW - GREEN | OFF | |
| FAN ON COMPRESSOR OFF | MAINS - RED | ON | Unit on defrost (heating mode) check that air temperature is not below 7°C. Check evaporator is clean. |
| FAULT - AMBER | OFF | |
| DEFROST - WHITE | ON | |
| WATER FLOW - GREEN | ON | |
| UNIT OPERATES INTERMITTENTLY | MAINS - RED | ON | Check water and air flows are not restricted, and that electrical supply is adequate. Check gas charge and airflow to machine. |
| FAULT - AMBER | ON / OFF | |
| DEFROST - WHITE | OFF | |
| WATER FLOW - GREEN | OFF | |
