Cooper & Hunter CH-S09FTXN-E2wf, Руководство по обслуживанию

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Troubleshooting
Troubleshooting
Diagram 7
Diagram 8
(3) Discharge temperature overheat, Compressor overload protection(H0
、
H2
）
Main checking points:
ƽ
If the eletric expansion valve is connected well or it is broken;
ƽ
If there is refrigerant leakage;
ƽ
If the overload protector is broken;
Flow chart:
Eliminate the malfunction
End
no
no
no
no
no
yes
yes
Replace outdoor
mainboard
Start
If the overload protector is connected well?
yes
yes
Check the resistance between the two
ends of the overload protector in ambient temperature,
if the resistance is below 1k
If the wiring of the eletric expansion valve
is coonected well?
Replace the
overload
protector
Check the coil of the eletric
expansion valve, replace
it if it is broken
Eliminate the malfunction
Reconnect according
to the wiring diagram
Check the refrigerant status, if there is
refrigerant leakage, recharge it according
to the service manual
Noted: the detection method of the coil of the eletric expansion valve: there is five pieces of the coil of the eletric expansion valve,
the resistance of one of them (the leftmost or the rightmost one) is almost the same as the resistance of other terminal (within
100
). Judge the condition of the electronic expansion valve through detecting these resistance.
(4) System overload protection(H1)
Main checking points:
●
● If the outdoor fan is running normally;
If the outdoor ambient temperature is within the normal range;
● If the indoor and outdoor radiation environment is good;
Flow chart:
Start
If the outdoor ambient temperature
is out of normal range
yes
yes
yes
no
no
no
It is a normal protection, please
operate the unit after the outdoor
ambient temperature has changed
If the indoor and outdoor radiation
is insufficient
Improve the radiation
environment of the unit
If the outdoor fan is working normally
Check if the terminal of the fan is
connected well, if the fan is broken
Replace fan capacitor
Replace outdoor fan
Replace outdoor
mainboard
End