Abnormalities Of Devices - York HIDS006B21S Service Manual

3.2.3

Abnormalities of Devices

Other
Abnormalities
If there is no abnormality (Alarm Code) indicated on the wired controller, and normal operation is not
available, take necessary action according to the following procedures.
Phenomenon
"RUN" Indicator
and LCD are ON.
However, the
system does
not operate.
(ex.
Indoor/outdoor
fans or
compressor
does not operate.)
The Comp.
does not Stop
or Start even
if the Setting
temperature
on LCD is
Changed.
3
1: For CIW01, refer to Section 3.1.4 (3).
2: For CIW01, refer to Section 3.1.4 (2).
3: Even if controllers are normal, the compressor does not operate under the following conditions.
* Indoor Air Temp. is lower than 69.8°F (21°C) or Outdoor Air Temp. is lower than 23°F (-5°C) during cooling
operation.
* Indoor Air Temp. is higher than 86°F (30°C) or Outdoor Air Temp. is higher than 73.4°F (23°C) during heating
operation.
* When a cooling (or heating) operation signal is given to the outdoor unit and a different operation signal is given
to indoor units.
* When demand signal or emergency stop signal is given to outdoor unit.
SM-18001-rev.1
Cause
Disconnected
Coil
Failure of
Indoor Unit
Fan Motor
Burnt-Out
Coil
Disconnected
Coil
Failure of
Outdoor Unit
Fan Motor
Burnt-Out
Coil
Failure of Comp. Motor
Failure of Comp.
Failure of
Contact
Magnetic
Failure
Switch for
Comp.
Failure of
Disconnected
One of PCBs
Wire to PCB
for
outdoor unit,
indoor unit,
Failure of
wired
PCB
controller
Failure of
Thermistor
Failure of
Air Inlet
Thermistor
Disconnection
of Thermistor
Abnormality of
Abnormality of
Wired Controller Cable
Wired Controller Cord
Failure of Indoor Unit PCB
Abnormalities of Devices
Check Item
Measure coil
resistance with tester.
Measure insulation
resistance.
Measure coil
resistance with tester.
Measure insulation
resistance.
Measure resistance
between wires.
Check for abnormal
sound from comp.
Check whether magnetic
switch is activated
correctly or not.
Check connection.
Check PCB in
self-checking mode
Check it in
Check Mode .
2
Check it in Test Run.
Check it in Test Run.
Check it in
self-checking mode
TROUBLESHOOTING
Action
(Turn OFF Main Switch)
Replace indoor unit
fan motor.
Replace outdoor unit
fan motor.
Replace compressor.
Replace magnetic
switch.
Correctly connect
wires.
Replace PCB if faulty.
.
1
Replace or correctly
connect wires
if abnormal.
Replace PCB if faulty.
.
1
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