Service/fault: If the “Service/fault” symbol appears on the display Ph 1800 633 920. Continuous illumination of the symbol indicates that the fault is not preventing appliance operation. A flashing “Service/fault” symbol indicates that water is not being heated and it is essential you notify your qualified contractor. Switching the appliance to emergency mode is a special case. The electric emergency/booster heater will then heat the water despite the flashing “Service/fault” symbol.
Normal and Fault Display Codes.
✅ E fault code
A fault code preceded by E appears if the fault relates to the refrigerant circuit.
📞 Ph 1800 633 920
✅ 2
The cylinder top sensor is faulty.
📞 Ph 1800 633 920
✅ 4
The integral sensor is faulty.
📞 Ph 1800 633 920
✅ 6 Flashing
The cylinder top sensor and the integral sensor are faulty. The appliance no longer delivers heat.
📞 Ph 1800 633 920
✅ 8 Flashing
The appliance has ascertained that the DHW cylinder has not been heated within the maximum temperature increase time, despite there being a demand.
📞 Ph 1800 633 920
✅ 16
A short circuit of the impressed current anode has occurred or the protective anode is faulty.
📞 Ph 1800 633 920
✅ 32 Flashing
The appliance is not being operated with a completely filled DHW cylinder. The appliance is not heating. Fill the DHW cylinder of the appliance. The fault code disappears and the appliance starts.
If problem persists
📞 Ph 1800 633 920
✅ 64
The defrost temperature has not yet been reached after the maximum defrost time has elapsed. The compressor is not working.
📞 Ph 1800 633 920
✅ 128
There is no communication between the controller and the programming unit. The most recently selected set values are active. The appliance continues to heat. Check that the plug is seated correctly and replace the connecting cable if necessary.
📞 Ph 1800 633 920
✅ 256 Flashing
Manually activated emergency mode (only electric emergency/booster heater active).
If problem persists
📞 Ph 1800 633 920
✅ E 1 Flashing
The temperature sensor on the air inlet is faulty. Check that the plug is seated correctly.
📞 Ph 1800 633 920
✅ E 2 Flashing
The temperature sensor on the evaporator is faulty. Check that the plug is seated correctly.
📞 Ph 1800 633 920
✅ E 4
The hot gas temperature sensor is faulty. The appliance continues to heat. To protect the appliance, the (possibly higher) set temperature is reduced to the set value for setback. Check that the plug is seated correctly.
📞 Ph 1800 633 920
✅ E 16
The high pressure switch has responded. Compressor heating mode is temporarily blocked. Compressor heating mode will continue as soon as the pressure has normalised. No action required.
If problem persists
📞 Ph 1800 633 920
✅ E 32
An electrical fault has occurred. Check whether the power supply has been interrupted. Then reset the fault with the corresponding menu option.
If problem persists
📞 Ph 1800 633 920
✅ E 64 Flashing
Evaporator temperature is below the minimum required. Check whether the evaporator is clogged with deposits. If required, clean the evaporator with clear water without cleaning agents or other additives.
If problem persists
📞 Ph 1800 633 920
✅ 128 Flashing
A permanent pressure switch fault has occurred. A pressure fault occurred multiple times within a defined pressure fault evaluation time. Check the relevant fault counter and look up the corresponding Fault Code.
📞 Ph 1800 633 920
Service/fault: If the “Service/fault” symbol appears on the display Ph 1800 633 920. Continuous illumination of the symbol indicates that the fault is not preventing appliance operation. A flashing “Service/fault” symbol indicates that water is not being heated and it is essential you notify your qualified contractor. Switching the appliance to emergency mode is a special case. The electric emergency/booster heater will then heat the water despite the flashing “Service/fault” symbol.
Normal and Fault Display Codes.
✅ E fault code
A fault code preceded by E appears if the fault relates to the refrigerant circuit.
📞 Ph: 1800 633 920
✅ 2
The cylinder top sensor is faulty.
📞 Ph: 1800 633 920
✅ 4
The integral sensor is faulty.
📞 Ph: 1800 633 920
✅ 6 Flashing
The cylinder top sensor and the integral sensor are faulty. The appliance no longer delivers heat.
📞 Ph: 1800 633 920
✅ 8 Flashing
The appliance has ascertained that the DHW cylinder has not been heated within the maximum temperature increase time, despite there being a demand.
📞 Ph: 1800 633 920
✅ 16
A short circuit of the impressed current anode has occurred or the protective anode is faulty.
📞 Ph: 1800 633 920
✅ 32 Flashing
The appliance is not being operated with a completely filled DHW cylinder. The appliance is not heating. Fill the DHW cylinder of the appliance. The fault code disappears and the appliance starts.
If problem persists:
📞 Ph: 1800 633 920
✅ 64
The defrost temperature has not yet been reached after the maximum defrost time has elapsed. The compressor is not working.
📞 Ph: 1800 633 920
✅ 128
There is no communication between the controller and the programming unit. The most recently selected set values are active. The appliance continues to heat. Check that the plug is seated correctly and replace the connecting cable if necessary.
📞 Ph: 1800 633 920
✅ 256 Flashing
Manually activated emergency mode (only electric emergency/booster heater active).
If problem persists:
📞 Ph: 1800 633 920
✅ E 1 Flashing
The temperature sensor on the air inlet is faulty. Check that the plug is seated correctly.
📞 Ph: 1800 633 920
✅ E 2 Flashing
The temperature sensor on the evaporator is faulty. Check that the plug is seated correctly.
📞 Ph: 1800 633 920
✅ E 4
The hot gas temperature sensor is faulty. The appliance continues to heat. To protect the appliance, the (possibly higher) set temperature is reduced to the set value for setback. Check that the plug is seated correctly.
📞 Ph: 1800 633 920
✅ E 16
The high pressure switch has responded. Compressor heating mode is temporarily blocked. Compressor heating mode will continue as soon as the pressure has normalised. No action required.
If problem persists:
📞 Ph: 1800 633 920
✅ E 32
An electrical fault has occurred. Check whether the power supply has been interrupted. Then reset the fault with the corresponding menu option.
If problem persists:
📞 Ph: 1800 633 920
✅ E 64 Flashing
Evaporator temperature < Minimum evaporator temperature. Check whether the evaporator is clogged with deposits. If required, clean the evaporator with clear water without cleaning agents or other additives.
If problem persists:
📞 Ph: 1800 633 920
✅ 128 Flashing
A permanent pressure switch fault has occurred. A pressure fault occurred multiple times within a defined pressure fault evaluation time. Check the relevant fault counter and look up the corresponding Fault Code.
📞 Ph: 1800 633 920
