Johnson Controls YVAHP072B31S, Руководство по обслуживанию

Страница: 1365 / 1796

Service Manual
3-51
TROUBLESHOOTING
*1): Refer to Section 3.1.4 (3) above for details.
Cause Check Item
Action
(Turn OFF Main Switch)
Event
Activation of
Float Switch
Failure of
Float Switch
Failure of
Condensate
Pump
Contact Failure
Incorrect Connection
Failure
Contact Failure
Incorrect Connection
Failure
Check condensate pan.
Check drainage by
pouring water.
Check continuity
when drain level is low.
Measure resistance
with a tester.
Measure resistance
with a tester.
Measure voltage
between CN36 terminals
with a tester.
Check connection.
Check connection.
High Drain
Level
Clogging of
Drainage
Up-Slope
Condensate
Piping
Remove foreign particles
clogging condensate
pipe.
Replace float switch
if faulty.
Replace condensate
pump if faulty.
Replace and tighten
connector.
Replace and tighten
connector.
Repair connection.
Repair connection.
Check PCB in
Self-Checking Mode *1).
Replace it if faulty. Failure of Indoor Unit PCB
Failure of
Drain Pump
Drain Piping
drain pan.
clogging drain pipe.
Replace drain pump
if faulty.