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6.1 Maintenance
General Maintenance
a. The unit should be serviced once a year by a authorised EVO technician. If the unit is located in
a coastal area, more frequent maintenance may be necessary.
b. The unit is designed to withstand only normal rainfall. It is NOT recommended to use a hose or
high pressure water cleaner to ush the internals of the heater. Pressurised water may cause
damage to the heater. Compressed air is acceptable however care must be taken with the ns
of the condensor.
Ensure the unit has sufcient water ow at all times to operate correctly by keeping all lters,
skimmer boxes and pump lter baskets clean. Check any bypass valves or other equipment for
correct operation and setting. Refer to specications for correct water ow volume for your heater.
6.2 Troubleshooting
The unit will not run
a. Is the screen of control panel lit? If not, make sure the electrical wires and cables are correctly
connected and the power is on. Ensure any circuit breaker devices are set to the ON position
and press the ON button on your controller. Check your controller cable is plugged in and is not
damaged. If the unit has been shut off or the power has been interrupted the heater will not restart
for a 5 minute period to protect the compressor. Wait 5 minutes before attempting a restart.
b. Is there sufcient water ow? If the screen displays a water ow related error check the water
ow. Is the water pump in operation and the system free of debris that may cause a blockage?
Disconnect pool cleaners to ensure proper water ow.
c. Is the current pool/spa water temperature higher than the set temperature on the controller? If so
the unit will not operate until the pool/spa water temperature falls below the set temperature on
the controller.
d. Check the unit is set to run at the correct time and date. Please check your current timing or
temperature modes on your controller – you may have programmed the unit to turn on at a
different time/date.
e. Check the controller for error messages and refer to table below.
The unit is running but not heating
a. Is the fan functioning? If not contact EVOHEAT for service information
b. Is the air discharged from the top of the fan noticeably cooler than the ambient temperature?
If not, check the refrigerant gauge on the bottom panel of the heater. Another way to determine if
the heater is working correctly is to view MAIN MENU>UNIT STATUS. Check to see if the WATER
OUT temp is higher than the WATER IN temp. Check also the INLET WATER TEMP is lower than
the HEAT TEMP set point. If the gauge shows less than 0.8MPA (the outside black band) contact
EVOHEAT to check the refrigerant system.
c. Ensure sufcient fresh airow around the unit as per installation instructions. Make sure cold air
discharged from the top of the unit does not recycle back through the heater. Check and clean
the condenser ns if they are dirty or blocked.
d. The unit will periodically defrost when the ambient air temperature is lower than 8 degrees C.
Heater runs continuously
a. Check the set temperature is at your desired level and that the pool water temperature is at or
below this set point.
b. Possible electrical component failure – contact EVOHEAT
Water appearing around unit base
a. Condensation is a normal by product of running a pool heat pump.
b. Possible water leak. Check the discharge for the presence of chlorine. If the water has no chlorine
then it is condensation and is normal. Another method of checking is to turn the heater off and
run the water pump continuously for a period of 2-4 hours. If the water dries out then it was
condensation. If there is a continuous leak contact EVOHEAT for service.
Temperature on controller is different from actual pool temperature
a. Possible temperature drop due to plumbing. Try increasing set temperature to reach your desired
swim temp
b. Possible fouling of sensor or faulty sensor
Troubleshooting Guide
Code Failure Reason Solution
P01 Water inlet temp. sensor failure Temp. Sensor is loose or faulty Check or change the sensor
P02 Water outlet temp. sensor failure Temp. Sensor is loose or faulty Check or change the sensor
P04 Ambient temp. sensor failure Temp. Sensor is loose or faulty Check or change the sensor
P05 Coil temp. sensor failure Temp. Sensor is loose or faulty Check or change the sensor
P07 Suction temp. sensor 1 failure Temp. Sensor is loose or faulty Check or change the sensor
E01 High pressure protection (HP) HP switch is loose or faulty Check or change the sensor
E02 Low pressure protection (LP) LP switch is loose or faulty Check or change the sensor
E03 Water ow protection Flow switch is loose or faulty Check or change the sensor
E06 Temp. Difference between inlet
and outlet
Temp. Difference>13 Temp. Difference<13, power off
E07 Antifreezing protection Antifreezing temp. <2 Check ow and water system
E19 Primary Antifreezing protection Ambient temp. is too low /
E29 Secondary Antifreezing protection Ambient temp. is too low /
E08 Communication failure Communication failure between
wire controller and main board
Check the connection between
wire controller and main board
Maintenance and
Troubleshooting