Hitachi PC-2H2 - Remote Control Functions and Diagnostics; Alarm Codes and Troubleshooting

INSTALLATION OF REMOTE CONTROL SWITCH <PC-2H2>
6
2. CHECK FUNCTION USING THE REMOTE CONTROL
2.1. ALARM CODES
Indication Trouble Possible Causes Action
Remote cable broken
Contact Failure in Remote control cable
Locate the cause and
repair.
RUN lamp Flashes for
2 Seconds
Failure in Transmission
Between Indoor Unit and
Remote Control Switch
IC or Microcomputer defective Check by remote
control self-checking
function
RUN lamp flashes 5 times
(5 seconds) with unit number
and alarm code displayed
Failure
(see Code)
Alarm Codes
Code Cause Model
01 Safety Device of the Indoor Unit is tripped (internal Thermostat, *Float Switch) Heat Pump & Twin
Safety Device of the Outdoor Unit is tripped (High pressure switch, Internal Thermostat
for Outdoor Fan Motor and Overcurrent Relay)
Heat Pump & Twin02
Safety Device of the Outdoor Unit is tripped (Overcurrent Relay, Compressor Chamber
Thermostat, High Pressure Switch and Internal Thermostat for Outdoor and Indoor Fan
Motor)
Cooling Only Models
03 Transmission Abnormality between Indoor Unit and Outdoor Unit Heat Pump & Twin
05 Picking up phase Abnormality Heat Pump & Twin
08 Abnormality High Temperature on the Top of Compressor Heat Pump & Twin
11 Thermistor Abnormality for inlet Air Temperature All Models
12 Thermistor Abnormality for outlet Air Temperature Heat Pump & Twin
13 Thermistor Abnormality for Freezing Temperature All Models
20 Thermistor Abnormality for Compressor Top Temperature Heat Pump & Twin
22 Thermistor Abnormality for Outdoor Air Temperature Heat Pump & Twin
24 Thermistor Abnormality for Outdoor Evaporating Temperature (defrosting) Heat Pump & Twin
25 Thermistor Abnormality for Condensing Temperature Heat Pump & Twin
32 Transmision Abnormality between Master and Slave Only Twin system
38 Abnormality in the Picking up Circuit protection All Models
41 Excessive Overload during Cooling Operation Heat Pump & Twin
42 Excessive Overload during Heating Operation Heat Pump & Twin
(* Only for RCI models & RPI with Drain Kit)
NOTES:
If an 02 cooling only models/05 heat pump models alarm
code appers when the unit is operated for the first time,
please check that incoming phases are correctly connected.
Inverse 2 of the 3 phases and retry.
Indication of unit number in remote control switch master or
single unit.
Unit 0 Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 Unit 6 Unit 7
) ) ) )! )" )# )$ )%
Indication of unit number in remote control switch slave or
single unit.
Unit 8 Unit 9 Unit 10 Unit 11 Unit 12 Unit 13 Unit 14 Unit 15
)& )' )) )> )+ )@ )- ).
Example:
)!
Unit Nº 3

Alarm Code of
"outdoor Unit
Protection Activated"