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12 Troubleshooting
Installer reference guide
74
EWAQ+005BAVP
Packaged air-cooled water chillers and packaged air to water heat
pumps
4P492900-1 – 2017.06
Error code
Detailed error
code
Description
E7
00
OU: Malfunction of outdoor
unit fan motor.
Please contact your dealer.
E8
00
OU: Power input overvoltage.
Please contact your dealer.
EA
00
OU: Cool/heat switchover
problem.
Please contact your dealer.
H0
00
OU: Voltage/current sensor
problem.
Please contact your dealer.
H3
00
OU: Malfunction of high
pressure switch (HPS)
Please contact your dealer.
H6
00
OU: Malfunction of position
detection sensor.
Please contact your dealer.
H8
00
OU: Malfunction of compressor
input (CT) system.
Please contact your dealer.
H9
00
OU: Malfunction of outdoor
air thermistor.
Please contact your dealer.
F3
00
OU: Malfunction of discharge
pipe temperature.
Please contact your dealer.
F6
00
OU: Abnormal high pressure
in cooling.
Please contact your dealer.
FA
00
OU: Abnormal high pressure,
actuation of HPS.
Please contact your dealer.
JA
00
OU: Malfunction of high
pressure sensor.
Please contact your dealer.
J1
00
OU: Pressure sensor problem
Please contact your dealer.
J3
00
OU: Malfunction of discharge
pipe thermistor.
Please contact your dealer.
J5
00
OU: Suction pipe temperature
sensor problem
Please contact your dealer.
J6
00
OU: Malfunction of heat
exchanger thermistor.
Please contact your dealer.
Error code
Detailed error
code
Description
J7
00
OU: Malfunction of heat
exchanger thermistor.
Please contact your dealer.
L3
00
OU: Electrical box temperature
rise problem.
Please contact your dealer.
L4
00
OU: Malfunction of inverter
radiating fin temperature rise.
Please contact your dealer.
L5
00
OU: Inverter instantaneous
overcurrent (DC).
Please contact your dealer.
P4
00
OU: Malfunction of radiating
fin temperature sensor.
Please contact your dealer.
U0
00
OU: Shortage of refrigerant.
Please contact your dealer.
U2
00
OU: Defect of power supply
voltage.
Please contact your dealer.
U7
00
OU: Transmission malfunction
between main CPU- INV CPU.
Please contact your dealer.
UA
00
OU: Indoor/outdoor combination
problem.
Power reset required.
Hydro part
Error code
Detailed error
code
Description
7H
01
Water flow problem.
Auto restart.
7H
05
Water flow problem during
heating/sampling, or after failed
deblocking routine.
Manual reset.
Check the space heating/cooling
circuit, or replace the water
pump.
7H
06
Water flow problem during
cooling/defrost.
Manual reset.
Check the plate heat exchanger.
7H
07
Water flow problem.
Pump deblocking active
80
00
Returning water temperature
sensor problem.
Please contact your dealer.