Toyotomi TAD-T32G Service Manual page 14

TROUBLESHOOTING
by Error indication on model TAD-T32G
Malfunction of Room
Thermistor
Check if there is loose, disconnection,
short-circuiting on connectors at first.
If yes, please modify.
Check of Thermistor
¡7kΩ after the thermistor is heated by
body temperature (36.5 degree) for 5
min.
¡Approx. 28kΩ after the thermistor is
soaked in to ice water for 5 min.
¡Approx. 2kΩ difference is allowance.
Check of Thermistor
No
Yes
¡7kΩ after the thermistor is heated by
body temperature (36.5 degree) for
5 min.
PCB
¡Approx. 28kΩ after the thermistor is
malfunction
soaked in to ice water for 5 min.
¡Approx. 2kΩ difference is allowance.
Thermistor
malfunction
Yes
PCB
malfunction
Check of Full Tank Switch
¡Check if contact point switches when the switch is changed ON to OFF or OFF to On.
¡Check if the connector wiring at Full Tank Switch side is correct or not.
The unit is normal. Please check the following.
¡Window is opened.
¡The unit is set in a too large room.
¡There is a device which generates humidity.
Malfunction of Thermistor on
Heat Exchanger (Please
check if the environmental
temp. is too low or not.
Always Sometimes
Heat
Exchanger
is normal.
¡Blockage of cooling cycle
¡Lack of Refrigerant
¡Malfunction of Fan Motor on
No
Thermistor
malfunction
If there is a malfunction,
No
modify or replace the
malfunction
Full Tank Switch.
Heat Exchanger is
iced. There is an
ice which covers
more than 2/3 of
Heat Exchanger.
the side of cooling
Check if there is loose, disconnection,
short-circuiting on connector of Full
Tank Switch. Also check a loose,
disconnection and breakage of Float.
No Modify, if any.
13
Alarm of full tank (Red)
Drain the drain water from drain
water outlet on the back side of unit.
Confirm if the unit is operated
after draining drain water.
Normal if it is
It is not solved.
operated.
Confirm if the Splasher disc is rotated
at the time of cooling operation.
Not rotated. It
is normal at the
Rotated.
time of Dry
mode operation.
Check of voltage of terminal for
Drain Motor on Main Circuit
Board. Check this procedure by
cooling mode operation.
120V output
Yes
PCB
malfunction
Check if there is loose, disconnection,
short-circuiting on connector of Drain
Motor.
No Modify, if any.
Malfunction of Drain Motor. Replace it
after check if the motor is malfunctioned.
No