York IDM030B21E Series, Service Manual

Page: 57 / 144

SM-16005-rev.2
3-35
TROUBLESHOOTING
*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.
Abnormalities of Devices
Other
Abnormalities
Incorrect Optional
Setting
The Comp.
does not stop
or start even
if the temperature
setpoint on the
LCD is
changed. *3)
Check Setting Condition
of "Thermistor of
Wired Zone Controller"
with Optional Setting
* Setting and Control
"00": Control by Indoor
Thermistor for
Suction Air
"01": Control by
Thermistor of
Wired Zone
Controller
"02": Control by
Average Value of
Indoor Thermistor
for Suction Air
and Thermistor of
Wired Zone
Controller
If the thermistor of
wired zone controller
is not used, set it at "00".
Incorrect
Input/Output Setting
Check Setting Condition
of "i1" and "i2" by
Input/Output Setting
* Setting and Control
"01": Room Thermostat
(Cooling)
"02": Room Thermostat
(Heating)
If the room
thermostat is not
used, set for input
signal actually used.
If no signal is used,
set it at "00".
Cause Check Item
Action
(Turn OFF Main Switch)
Event
Wired
Wired
wired controller
Check Setting Condition
of "Thermistor of
Wired Controller"
with Optional Setting
* Setting and Control
"00": Control by Indoor
Thermistor for
Suction Air
"01": Control by
Thermistor of
Wired Controller
"02": Control by
Average Value of
Indoor Thermistor
for Suction Air
and Thermistor of
Wired Controller