Error Codes - ECO2 Systems SANCO2 GS4-45HPC Owner's Manual

Error Codes

When an error has occurred, a red LED on the operation panel turns on and an error code
is displayed on the LED display. The panel does not turn to the display sleep mode while
the error code is shown.
Figure 3 Error Code example
Below is the list of the error codes. If the corrective action does not solve the error problem,
a malfunction of the PCB is highly likely.
Error
Error
Error contents
code
code
HP ambient（outdoor）
H9
HP ambient(outdoor) temperature
H9
temperature thermistor error
thermistor error
HP water outlet（outgoing）
HC
HP water outlet(outgoing) temperature
HC
temperature thermistor error
thermistor error
HP discharge temperature
J3
J3 HP discharge temperature thermistor error thermistor error
HP suction temperature thermistor
J5
J5 HP suction temperature thermistor error
error
HP defrost temperature thermistor
J6 HP defrost temperature thermistor error
J6
error
HP water inlet(return) temperature
HP water inlet（return）
J8
J8
thermistor error
temperature thermistor error
H7 Tank temperature thermistor error
H7 Tank temperature thermistor error
E6 Compressor booting error
E6 Compressor booting error
H6 Compressor revolution error
H6 Compressor revolution error
U0 Refrigerant leakage error
U0 Refrigerant leakage error
E1 Main PCB error
E1 Main PCB error
E2
Control PCB error
E2
L7
Control PCB error
L7
Communication error between main PCB
F5
to control PCB
Error contents
Sanden Heat Pump – Owner's Manual
SANCO Heat Pump – Owner's Manual
2
Error
Error
code
code
Communication error between main
F5
PCB to control PCB
E8 High inlet current error
E8 High inlet current error
H8
Current error
H8 Current error
L4 High temperature of module error
L4 High temperature of module error
L5 High outlet current error
P4 Module temperature thermistor error
L5 High outlet current error
Module temperature thermistor
U2 High voltage error
P4
error
HJ Water circuit error
U2 High voltage error
EC
High water outlet error
HJ Water circuit error
H0
E9 Water circulation pump error
EC High water outlet error
E7 Fan motor locked
E9 Water circulation pump error
F3 Discharged temperature error
E7 Fan motor locked
FA
High pressure side error
F3 Discharged temperature error
H3 Pressure switch error
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Error contents
Error contents