Hitachi RAC-07CHV1, Руководство по обслуживанию

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Timer-Lamp, break-down checking in blinking sign.
Check the break-down factor from the frequency of timer-lamp blinking.
No. Mode of Timer-Lamp blinking Indication Factor Estimated Break-Down Part
4-way valve not working
Inside temperature is low in
heating operation time or inside
temperature is high in cooling
operation time.
(1) 4-way valve is not working.
(2) Heat-barter thermistor is in
disconnection.
(Only heating time)
Outdoor unit operating by
compulsion
Out-door unit is under forcible
operation or under balancing after
forcible operation.
Outdoor electrical goods.
Outdoor, Indoor inter-face is
not working
In case of the interception of inter-
face signal from outdoor unit.
(1) Indoor inter-face circuit.
(2) Outdoor inter-face circuit.
Indication of outdoor unit
break-down
Outdoor unit heat-barter (DEF)
thermistor is disconnected or
there is a short-circuit.
Outdoor unit heat-barter (DEF)
thermistor.
DC Fan motor — over flow of
electricity
Indoor - DC Fan motor has over
flow of electricity.
(1) Indoor - Fan is locked.
(2) Indoor - Fan motor.
(3) Indoor - control circuit board.
IC 401 Data read wrongly
In case that data read from IC401
is wrong.
IC401 is not in order.
Note
(1) No indication for self-checking in case the inter-face circuit is already out of order from the time
machine power inputting.
(2) Self-checking lamp of outdoor unit is going 9 times on and off when the Indoor unit is in the above
mentioned self-checking.
(3) Recheck whether opposite connection or disconnection of F-cable, when there is no reaction in the
indoor unit.
(4) It is able to be operated by remote control unit, for re-confirming the operation under timer-lamp
blinking.
1
2
3
4
5
6
5
sec.
5
sec.
5
sec.
5
sec.
5
sec.
5
sec.
( – – 0.5 second on, o.5 second off.)
5
sec.
– – 13 times
– – 10 times
– – – – 4 times
– – – – – 3 times
– – – – – – 2 times
– – – – – – – – 1 time