Troubleshooting - Hitachi YUTAKI S Series Installation And Operation Manual

SAFETY SUMMARY &
CONTROL DEVICE SETTING
14. 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.
For Compressor
Pressure Switches
Fuse
3~ 400V 50Hz
CCP Timer
Setting Time
For Condenser Fan Motor
Internal Thermostat
For Control Circuit

15. TROUBLESHOOTING

Alarm Code Indication on Remote Control Switch:
Alarm Retry Stop
Origin
Code Code
02 - Outdoor
03 - Outdoor Transmission Error
04 - Outdoor Inverter Transmission Abnormality
05 - Outdoor Power Phase Detection Abnormality
06 18 Outdoor Undervoltage, Overvoltage
Outdoor Abnormal decrease of discharge gas superheat
07 16
08 15 Outdoor Compressor-Top Temp Over-increase
Model
High Cut-Out
Cut-In
Cut-Out
DC
Cut-Out
AC
Cut-In
Fuse Capacity on PCB 1,5
Fuse Capacity on PCB 3
Alarm code
Alarm indication
Detail of Abnormality
Activation of Outdoor Unit Protection Device
(Except for Alarm Code 41, 42)
degree
■
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-8.0HRNME-AF
Automatic Reset, Non-Adjustable
MPa
-0.05
4.15
-0.15
MPa 3.20 + 0.15
A
40
min. Non-Adjustable
3
Automatic Reset, Non-Adjustable
(each one for each motor)
120+5
Cº
Cº 150+5
Cº 96+5
5
A
10
High pressure interrupting device activated
Outdoor fuse meltdown, Indoor/outdoor connection wiring
(breaking, wiring error, etc.)
Control PCB – Inverter PCB connection wiring (breaking, wiring
error, etc.)
Power source wiring open phase in Indoor Units
Outdoor PCB abnormality, inverter PCB abnormality, DM, CB
abnormality
Excessive refrigerant, expansion valve open-locked, Fan motor
locked
Shortage or leakage of refrigerant, piping clogging, Fan motor lock
RAS-10.0HRNME-AF
-0.05
4.15
-0.15
3.20 + 0.15
40
3
120+5
150+5
96+5
5
10
Main Factors
PMML0215A rev.1 - 02/2012
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