Indoor Unit: Drain Level Above Limit - Daikin VRV R-407C PLUS Series Service Manual

SiE 00-07
3.7

Indoor Unit: Drain Level above Limit

AF
Remote Controller
Display
Supposed Causes
Troubleshooting
Troubleshooting R-407C PLUS Series
Humidifier unit (optional accessory) leaking
Defect of drain pipe (upward slope, etc.)
Defect of indoor unit PC board
Field drain
piping has a defect such as
upward sloping.
NO
A humidifier
unit (optional accessory) is
installed on the indoor
unit.
NO
YES
YES
Troubleshooting
Modify the drain piping.
Check if the humidifier unit is leaking.
Defect of indoor unit PC board.
(VF034)
133