Hitachi RAF-25QXA RAF25QXA Manuel D’Utilisation
Codes de produits
RAF25QXA
14-27
14.7.3
MONO SPLIT INDOOR (RAK-18/25/35PSA, RAK-18/25/35PSAN, RAK-18/25/35PSPA)
No
Blinking of TIMER lamp
Reason for indication
Possible causes
1
When the indoor heat exchanger
temperature is too low in the heating
mode or it is too high in the cooling mode.
temperature is too low in the heating
mode or it is too high in the cooling mode.
Reversing valve defective
1times
1) Reversing valve defective
2) Heat exchanger thermistor
2) Heat exchanger thermistor
disconnected (only in heating mode)
(Note)
The malfunction mode is displayed only
after the abnormal condition occurrs 3
The malfunction mode is displayed only
after the abnormal condition occurrs 3
rd
time (read every 3 minutes
2
When the outdoor unit is in forced
operation or balancing operation after
forced operation
operation or balancing operation after
forced operation
Outdoor unit is under forced operation.
Electrical parts in the outdoor unit.
3
When the interface signal from the
outdoor unit is interrupted.
outdoor unit is interrupted.
Indoor/outdoor interface defective
1) Indoor interface circuit.
2) Outdoor interface circuit
2) Outdoor interface circuit
4
Malfunction of Power Relay
Power Relay Defective
5
When room thermistor or heat exchanger
thermistor is opened circuit or short circuit.
thermistor is opened circuit or short circuit.
Room thermistor or heat exchanger
thermistor is faulty
thermistor is faulty
1) Room thermistor
2) Heat exhanger thermistor
2) Heat exhanger thermistor
6
When over-current is detected at the DC
fan motor of the indoor unit.
fan motor of the indoor unit.
Over-current detection at the DC fan
motor
motor
10times
1) Indoor fan locked
2) Indoor fan motor
3) Indoor control P.W.B.
2) Indoor fan motor
3) Indoor control P.W.B.
7
High Voltage Generator Defective
8
1) Connecting Cord Defective
2) Outdoor Defective
2) Outdoor Defective
9
When data read from IC401 or IC402 is
incorrect.
incorrect.
IC401 or IC402 data reading error
IC401 or IC402 abnormal
10
Switch PWB Defective
11
Cleaning Unit Defective
12
Failure of Peltier Device
*Note: Refer to Chapter 9 for error codes displayed on remote controllers.
(
Lights for 0.35 sec. at interval of 0.35 sec.)
<Cautions>
1) If the interface circuit is faulty when power is supplied, the self diagnosis display will not be displayed
2) If the indoor unit does not operate at all, check if the connecting cable is connected to the outdoor unit.
1) If the interface circuit is faulty when power is supplied, the self diagnosis display will not be displayed
2) If the indoor unit does not operate at all, check if the connecting cable is connected to the outdoor unit.
2sec
1 time
2sec
2 times
2sec
3 times
2sec
9 times
2sec
10times
2sec
5 times
2sec
11times
2sec
12times
2sec
13times
2sec
17times
2sec
18times
2sec
19times