Discharge Temperature [˚C]; Compressor Body Temperature [˚C]; Ambient Temperature [˚C]; Compressor Suction Temperature [˚C] - Daikin VRV IV+ Service Manual
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Also See for VRV IV+:
- Service manual (200 pages) ,
- Installer and user reference manual (176 pages) ,
- Installation and operation manual (52 pages)
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Troubleshooting
Main
Sub code
code
Main Sub 1 Sub 2
F3
01
03
05 Compressor Discharge Temperature Too High
20
21
22 Compressor Body Temperature Too High
F4
01
02
04
06 Wet Alarm for Compressor (M1C)
03
05
07 Wet Alarm for Compressor (M2C)
08
10
12 Wet Operation Error for Compressor (M1C)
09
11
13 Wet Operation Error for Compressor (M2C)
14
F6
01
02
03
F9
01
02
05
H3
02
04
06 Transmission Error on Inverter PCB (A3P)
03
05
07 Transmission Error on Inverter PCB (A6P)
H7
01
05
09 Defective fan inverter PCB (A4P)
02
06
10 Defective fan inverter PCB (A7P)
21
23
26 Defective fan inverter PCB (A7P)
22
24
26 Defective fan inverter PCB (A4P)
H9
01
02
03 Ambient Temperature Thermistor Malfunction
HA
-
J3
16
22
28 Discharge Temperature Thermistor (R21T) Open Circuit
17
23
29 Discharge Temperature Thermistor (R21T) Short Circuit
18
24
30 Discharge Temperature Thermistor (R22T) Open Circuit
19
25
31 Discharge Temperature Thermistor (R22T) Short Circuit
47
49
51 Compressor Body Temperature Thermistor (R8T) Open Circuit
48
50
52 Compressor Body Temperature Thermistor (R8T) Short Circuit
56
57
58 High Discharge Temperature
59
60
61 Discharge Temperature Thermistors Cross-Wired
J5
01
03
05 Compressor Suction Temperature Thermistor (R12T ) Malfunction
18
19
20 Suction Temperature Thermistor (R10T ) Malfunction
J6
01
02
03 De-icer Temperature Thermistor (R7T) Malfunction
08
09
10 Heat Exchanger Upper Gas Pipe Thermistor (R8T ) Malfunction
11
12
13 Heat Exchanger Upper Gas Pipe Thermistor (R9T ) Malfunction
Service manual
192
Wet Operation Caution
Indoor Unit Wet Operation Alarm
Refrigerant Overcharge Detection by High Pressure Sensor S1NPH
Refrigerant Overcharge Detection During Test Run
Refrigerant Overcharge Detection from High Subcool Value
Branch Selector box electronic expansion valve abnormality (high pressure/low
pressure gas pipe)
Branch Selector box electronic expansion valve abnormality (suction gas pipe)
Branch Selector box electronic expansion valve abnormality (subcooling)
Defrost Fail Alarm
Description
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
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