ENGLISH-44
Tr
o
uble sh
oo
ting
•
Incorrect handling of thermostat, safety valve or other valves may lead to tank rupture. When servicing the unit
follow instructions carefully:
•
Always turn o
ff
main power supply when water supply is being shut o
ff
.
•
Test the free operation of the safety valve regularly by opening the valve ensuring the water
fl
ows freely.
•
Electrical connection and all servicing of the electrical components should only be carried out by an authorized
electrician.
•
Fitting and all servicing of plumbing
fi
xtures should only be carried out by an authorized installer.
•
When replacing the thermostat, safety valve or any other valve or part supplied with this unit, use only approved
parts of the same speci
fi
cation.
WARNING
Err
o
r c
o
des
If the unit has s
o
me pr
o
blems and d
o
es n
o
t w
o
rk n
o
rmally, err
o
r c
o
de is sh
o
wn
o
n the OUTDOOR UNIT main PBA
o
r LCD
o
f the wired rem
o
te c
o
ntr
o
ller.
Display
Explanati
o
n
Err
o
r S
o
urce
101
Hydro Unit / Outdoor Unit communication connection error
Hydro Unit
122
EVA Inlet temp sensor SHORT or OPEN
Hydro Unit
123
EVA Outlet temp sensor SHORT or OPEN
Hydro Unit
162
EEPROM Error
Hydro Unit
198
Error of Terminal Block's Thermal Fuse(Open)
Hydro Unit
201
Hydro Unit / Outdoor Unit communication error(Matching error)
Hydro Unit/Ourdoor Unit
202
Hydro Unit / Outdoor Unit communication error(3 min)
Hydro Unit/Ourdoor Unit
203
Communication error between INVERTER and MAIN MICOM (4 min)
Outdoor Unit
221
Outdoor Unit air temperature sensor error
Outdoor Unit
231
Condenser temperature sensor error
Outdoor Unit
251
Discharge temperature sensor error
Outdoor Unit
320
OLP sensor error
Outdoor Unit
403
Detection of freezing (During cooling operation)
Outdoor Unit
404
Protection of Outdoor Unit when it is overload (during Safety Start, Normal
operation state)
Outdoor Unit
407
Comp down due to high pressure
Outdoor Unit
416
Discharge of a compressor is overheated
Outdoor Unit
419
OUTDOOR UNIT EEV operation error
Outdoor Unit
425
Power source line missing error (only for 3-phase model)
Outdoor Unit
440
Heating operation blocked (outdoor temperature over 35
°C)
Outdoor Unit
441
Cooling operation blocked (outdoor temperature under 9
°C)
Outdoor Unit
458
OUTDOOR UNIT fan1 error
Outdoor Unit
461
[Inverter] Compressor startup error
Outdoor Unit
462
[Inverter] Total current error/PFC over current error
Outdoor Unit