Hitachi UTOPIA RAS-4HVRP2E - Page 301

10 Troubleshooting
Troubleshooting in check mode
SMGB0136 rev.0 - 07/2021
299
10
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Cause of inverter stoppage (i)
Code Cause
Cause of stoppage
for corresponding
unit
Remark
Indication
during retry
Alarm Code
1
Automatic Stoppage of Transistor Module
(DIP-IPM Error)
(Overcurrent, Undercurrent, Temperature increase)
17 P7 53
2
Instantaneous Over Current
17 P7 48
3
Abnormal Inverter Fin Thermistor
17 P7 54
4
Electronic Thermal Activation (Inverter overcurrent)
17 P7 48
5
Inverter Voltage Decrease (Undervoltage)
18 P8 06
6
Over Voltage
18 P8 06
7
Abnormal Inverter Transmission
18 - 04
8
Abnormal Current Detection
17 P7 51
9
Instantaneous Power Failure Detection
18 - -
11
Reset of Micro-Computer for Inverter
18 - -
12
Earth Fault Detection from Compressor (Only Starting)
17 P7 53
13
Phase detection abnormality
18 P8 -
14
Inverter Non-Operation
18 - 55
15
Inverter Non-Operation
18 - 55
16
Inverter Non-Operation
18 p8 55
17
Communication Abnormality
18 p8 55
18
Protection Device Activation (PSH)
- - 02
19
Protection Detection Device Abnormality
- - 38
20
Early Return Protection Device
18 P7 53
21
Loss of synchronism
17 - 31
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Table of capacity codes of indoor unit
Code Equivalent horsepower
06
0.8
08
1.0
10
1.3
11
1.5
13
1.8
Code Equivalent horsepower
14
2.0
16
2.3
18
2.5
22
3.0
32
4.0
Code Equivalent horsepower
40
5.0
48
6.0