Hitachi UTOPIA RASC Series Installation And Operation Manual page 43

SAFETY SUMMARY
& CONTROL DEVICE
SETTING
16. 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
High Pressure Switch for Compressor
Pressure Switch for By-Pass
Fuse
Cranckcase Heater
CCP Timer
Setting Time
Fan Motor Fuse
Internal Thermostat
MCB: Magnetic Circuit Braker
17. TROUBLESHOOTING
If RUN lamp flashes for 2 seconds, there is a failure
in transmission between the indoor unit and the remote
control switch. Possible causes are:
The remote cable is broken
−
Contact failure in remote control cable
−
IC or microcomputer defective
−
In all cases, contact your service contractor
−
RASC-3HVRNE
Cut-out MPa
Cut-in MPa
Cut-out MPa
Cut-in MPa
1~ 230V 50Hz A
3N~ 400V 50Hz A
Output W
-
min.
A
Cut-out ºC
Cut-in ºC
In RUN lamp flashes 6 times (5 seconds) with unit number and alarm
code displayed

Indoor unit
number
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.
RASC-5HVRNE
-0.05
4.15 4.15
-0.15
±0.15
3.20 3.20
+0.01
2.85 2.85
-0.01
0
3.60 3.60
-0.15
40
-
40x2 40x2
Non-Adjustable
3
10
130 130
60~110 60~110
NOTE
The alarm code displayed (see table below) and contact your
service provider.
Alternate
Alarm code
indication
every second
Model Code
Indication
Heat-pump
H
Inverter
P
Multi (Set-free)
F
Cooling only
C
Others
E
 Twin, triple and quad
PMML0140A rev.1 - 07/2009
RASC-10HRNE
-0.05 -0.05
4.15
-0.15 -0.15
±0.15 ±0.15
3.20
+0.01 +0.01
2.85
-0.01 -0.01
0 0
3.60
-0.15 -0.15
50 -
- 40x2
40x1
3 3
10 12 (MCB)
145
70
Model code
No. of indoor units
connected
Description
43
Alarm code