Hitachi RAS-(4-6)HVRNS2E - Activation of the Protection Device for the Indoor Fan Motor (Except RCI, RCIM and RPK)

8 Troubleshooting
240
SMGB0064 rev.0 - 08/2011
Alarm code
19
Activation of the protection device for the indoor fan motor (except RCI, RCIM and RPK)
• The RUN LED ickers and “ALARM” is displayed on the remote control switch.
• The unit number, the alarm code and the unit code are alternately displayed on the set temperature section.
The unit number and the alarm code are displayed on the display of the outdoor unit PCB.
- This alarm code is displayed when the temperature of the internal thermostat for the indoor fan motor is higher than
130 °C.
Phenomenon Cause Check item
Action
(Turn OFF the main
switch)
Activation of the internal
thermostat for the indoor
unit fan motor
Faulty indoor unit fan motor
Measure the coil resistance
and the insulation resist-
ance
Replace the motor if faulty
Faulty internal thermostat
Fault
Check the continuity after
the fan motor temperature
decreases to room temp
Replace the fan motor if
there is no continuity
Insufcient contacting
Measure the resistance
by means of the tester
Correct looseness.
Replace the connectors
Incorrect connection Check the connections Repair the connections