Si33-105
Troubleshooting
Troubleshooting R407C PLUS Series Heat Recovery System
163
3.7
Indoor Unit:
Drain Level above Limit
Remote
Controller
Display
AF
Supposed
Causes
!
Humidifier unit (optional accessory) leaking
!
Defect of drain pipe (upward slope, etc.)
!
Defect of indoor unit PC board
Troubleshooting
Defect of indoor unit PC board.
Modify the drain piping.
YES
YES
Check if the humidifier unit is
leaking.
NO
NO
Field drain
piping has a defect such as
upward sloping.
A humidifier
unit (optional accessory) is
installed on the
indoor unit.
(VF034)
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 ...