Hitachi RAS-(4-12)HRNM(2)(E) - Protection Control Code on 7-Segment Display; Cause of Inverter Stoppage

8 Troubleshooting
295
SMGB0064 rev.0 - 08/2011
8
8.2.5 Cause of inverter stoppage
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 - -
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 - -
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 (63H1)
- - 02
19
Protection Detection Device Abnormality
- - 38
Protection control code on 7-segment display
1 Protection control code is displayed on 7-segment when a protection control is activated.
2 Protection control code is displayed while function is working, and goes out when released.
3 When several protection control are activated, code number with higher priority will be indicated (see below for the
priority order).
a. Higher priority is given to protection control related to frequency control than the other.
• Priority order
- High-Pressure Increase Protection
- Over Current Protection
- Cold Draft Protection
- Low-Pressure Ratio Control at Cooling Operation
b. In relation to retry control, the latest retrial will be indicated unless a protection control related to frequency control
is indicated.
Code Protection Control
P 0
Low-Pressure Ratio Control at Cooling Operation
P 1
High-Pressure Ratio Control at Heating Operation
P 2
High-Pressure Increase Protection
P 3
Over Current Protection
P 4
IPM Fin Temperature Increase Protection
P 5
Discharge Gas Temperature Increase Protection