Troubleshooting - Hitachi RAS-4HRNS3E Installation And Operation Manual

Safety summary & control device setting
17 SAFETY SUMMARY & CONTROL DEVICE SETTING
Compressor Protection

High Pressure Switch:
This switch cuts out the operation of the compressor when the
discharge pressure exceeds the setting.
Model
For Compressor
Pressure Switches
High Cut-Out
Cut-In
For Control
Fuse
1~ 230V 50Hz
3N~ 400V 50Hz
CCP Timer
Setting Time
For Condenser Fan Motor
Internal Thermostat
Cut-Out
For Control Circuit
Fuse Capacity on PCB

18 TROUBLESHOOTING

Alarm Code Indication of Remote Control Switch:
Abnormal Abnormal
Indoor Unit Ref. Cycle
No. No.
COOL MED
ADDS. RN
A/C ALARM
35 PMML0317A rev.1 - 11/2013
RAS-(4-6)HVNP1E
RAS-3HVNP1E
RAS-4HVRNS3E
Automatic Reset, Non-Adjustable (each one for each compressor)
-0.05
MPa 4.15
-0.15
MPa 3.20±0.15
A 40
(RAS-4HVNCE = 40)
A
min.
3
Automatic Reset, Non-Adjustable (each one for each motor)
ºC -
A 5
Alarm Code Model Code
Indicated
for a sec-
ond alter- COOL MED
nately
A/C
Fan Motor Protection

When the thermistor temperature is reached to the setting, motor
output is decreased.
The other way, when the temperature becomes lower, limitation
is cancelled.
RAS-(4-6)HNP1E
RAS4HRNS3E
-0.05
4.15 4.15
-0.15
3.20±0.15 3.20±0.15
50
2 X 20
Non-Adjustable
3
-
5
Connected
No. of Indoor Alarm
Units Code

ADDS. RN
ALARM
RAS-(8-10)HNPE
RAS-(8-10)HNCE
-0.05 -0.05
4.15
-0.15 -0.15
3.20±0.15
2 X 40
3 3
- -
5 5
Model Code
Indication Model
Heat-Pump

Inverter

Multi (Set-Free)

Cooling Only

Others

2, 3 and 4 indoor units

system