ThermoTec LCSPI-120, Руководство по эксплуатации и установке

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Page 13
RENEWABLE HEATING & COOLING TECHNOLOGY
ERROR CODES
When an error occurs or the protection mode is set automatically,the wired controller will
display an error code as below.
Failure Code
Possible reasons
Remedy
Er 15
Inlet water temp sensor
failure
1)sensor open circuit
2)sensor short circuit
3)Main PCB damaged 1)Check the sensor connection
2)Replace the sensor
3)Replace the main PCB
Er 27
Outlet water temp
sensor failure
As above As above
Er 42 Coil temp sensor failure As above As above
Er 21
Ambient temp sensor
failure
As above As above
Er 18
Compressor exhaust
gas temp. sensor failure
As above As above
Er 23
Inadequate outlet water
temp protection under
cooling mode 1)Inadequate water flow rate
2)Inadequate inlet water temp
3)Main PCB damaged
1)Check the water filter and
water circuit (no block)
2)Adjust the setting temp to
normal working range
3)Replace the main PCB
Er 44
Anti-freeze
protection in Winter
This function occurs when
ambient temp is too low and unit
is in standby
No action needed
Er 05 High pressure protection
1)Inadequate flow rate
2)Uncompressed gas in refrigerant
system
3)Overcharge with refrigerant
4)Water temp setting too high
5)Poor connection of pressure switch
6)Pressure switch failure
7)Main PCB damaged
1)Check pump and water control
valve
2)Discharge and them recharge
the refrigerant
3)Discharge some refrigerant
4)Set lower water temp
5)Reconnect the switch
6)Replace the pressure switch
7)Replace the PCB
Er 06
Low pressure protection
1) Undercharged refrigerant
2) Capillary block
3) Poor connection of pressure switch
4) Pressure switch failure
5) Main PCB damaged 1) Add some refrigerant
2) Replace the capillary
3) Reconnect the switch
4) Replace the pressure switch
5) Replace the PCB
Er 03 Water flow switch failure
1) Inadequate water flow
2) Water flow switch damaged
3) Main PCB damaged 1) Check the pump
2) Replace the water flow switch
3) Replace the PCB
Er 37
1) Too low water flow
2) Main PCB damaged
1)Check the water filter and water
circuit (no blockages)
2)Replace the PCB
Failure for too big inlet/outlet
water temp difference for
cooling mode
Er 12
1) Refrigerant Undercharged
1) Add some refrigerant
High compressor
exhaust gas temp
protection