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Evo315-C Manual
Page 15
7.2 Error Codes
Malfunction
Display
Cause
Solution
Bottom water temp. sensor
failure
P01
1. Check connection between the sensor to the PC board.
2. Check the resistance of the sensor, if the resistance is greater
than 500k or less than 100 this means the sensor is broken and
will need to be replaced.
Top tank water temp. sensor
failure
P02
Ambient temp. sensor failure
P04
Coil temp. sensor failure
P05
Suction temp. sensor failure
P07
Solar control temp. sensor
failure
P034
High pressure protection
E01
1. Check if the inlet/outlet water temp. difference is too high
2. Check the water flow
3. The target temp. setting needs to be reduced if it is too high
4. Check the high-pressure switch. If the switch is open when the
connection is closed, replace it.
Low pressure protection
E02
1. Check if the system is leaking
2. Check the low pressure switch
3. Ensure the installation location allows for heat dissipation
4. Check the fan motor
5. Ensure the throttling device is not stuck
6. If all above are as normal, replace the PC board
Communication failure
E08
1. Check the connection between the wired controller and PC board
2. Replace the wire controller
3. Replace the PC board
Anti-freeze protection in
winter
E09
1. Check that the high and low pressure switches are working
normally
2. Check both the water tank lower temp. sensor & ambient temp.
sensor to see if they are working normally
3. See if the lower temperature of the tank is lower than 10, and the
ambient temp is lower than 0 degrees.
Summary of Contents for Evo315-C
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