Si33-105
Troubleshooting
Troubleshooting R407C PLUS Series Heat Recovery System
165
3.9
Indoor Unit:
Malfunction of Thermistor (R2T) for Liquid
Pipe
Remote
Controller
Display
C4
Supposed
Causes
!
Defect of thermistor (R2T) for liquid pipe
!
Defect of indoor unit PC board
Troubleshooting
(VF036)
Replace the indoor unit PC board.
Connect the thermistor and turn
on again.
NO
NO
Replace the thermistor (R2T).
YES
YES
Connector
is connected to X12A
of the indoor unit
PC board.
Resistance
is normal when
measured after
disconnecting the thermistor
(R2T) from the indoor
unit PC board
(3.5k
Ω
~
360k
Ω
)
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 ...