York HIDS006B21S Service Manual page 42

TROUBLESHOOTING
Event
Activation of
Float Switch
Failure of
Float Switch
Failure of
Condensate
Pump
Failure of Indoor Unit PCB
1: Refer to Section 3.1.4 (3) above for details.
3-20
Cause
Clogging of
High Drainage
Condensate Up-Slope
Level Condensate
Piping
Failure
Contact Failure
Incorrect Connection
Failure
Contact Failure
Incorrect Connection
Check Item
Check condensate pan.
Check drainage by
pouring water.
Check continuity
when condensate
level is low.
Measure resistance
with a tester.
Check connection.
Measure voltage
between CN36 terminals
with a tester.
Measure resistance
with a tester.
Check connection.
Check PCB in
Self-Checking Mode.
1
Action
(Turn OFF Main Switch)
Remove foreign
particles clogging
condensate pipe.
Replace float switch
if faulty.
Replace and tighten
connector.
Repair connection.
Replace condensate
pump if faulty.
Replace and tighten
connector.
Repair connection.
Replace it if faulty.
SM-18001-rev.1