Si33-105
Troubleshooting (Inverter)
Troubleshooting R407C PLUS Series Heat Recovery System
203
5.8
Outdoor Unit:
Malfunction of Inverter Radiating Fin
Temperature Rise Sensor
Remote
Controller
Display
P4
Supposed
Causes
!
Defect of radiator fin temperature sensor
!
Defect of inverter unit
Troubleshooting
(VF070)
After resetting, restart.
YES
YES
Is the
resistance of thermistor
correct?
Is the resetting possible?
Replace radiation fin thermistor.
Measure the resistance of
radiation fin thermistor.
NO
Replace inverter PC board.
NO
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Summary of Contents for R407C PLUS
Page 1: ...System R407C PLUS Series Heat Recovery System Si33 105 Service Manual ...
Page 11: ...Introduction Si33 105 x ...
Page 41: ...Specifications Si33 105 30 Specifications R407C PLUS Series Heat Recovery System ...
Page 147: ...Test Operation Si33 105 136 Test Operation R407C PLUS Series Heat Recovery System ...
Page 263: ...Si33 105 iv Index ...