- 17 -
7. SYSTEM PROTECTIONS/ ERROR CODES
When an error occurs or the protection mode is set automatically, the wired controller will display an
error code as below.
Wrong connection of live wires
1) Reverse position of 2 live
wires(3-Phase units only).
Live wires loose or without power
1) Check if live wires loose or
without power
(3-Phase units only).
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
Anti-freeze protection in winter
This function occurs when
ambient temp is too low.
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 then
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
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
The control pad and PCB
connection failure
Check the wire connection
Over-high compressor exhaust gas
temp protection
1) Refrigerant Undercharged
2) Possible reasons as Er05
1) Add some refrigerant
2) Similar corrections as Er05
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
-
-
Automated Environmental Systems Ltd., Unit 1, 1 Wimbledon Avenue, Brandon, Suffolk IP27 0NZ
01842 819130 | sales@automatedenvironmentalsystems.co.uk
To Next Page
Loading...
