Toyotomi TAD-T32G Service Manual page 12

TROUBLESHOOTING
When problem is unclear (also when there is a cooling-down error)
Plug in
Check plug lamp
Plug lamp off Plug lamp on
Check plug outlet vohage
Voltage 115V No voltage
Power supply faulty
Plug faulty
Minimum set temperature.
Maximum fan speed.
Set the room temperature thermistor at
86˚F (30˚C) or higher by warming up with
body heat.
Compressor runs Any of the previous
within five minutes. three items does
Cool side air blower not run.
runs.
Warm side air
blower runs.
Evaporator cools Evaporator does
down in approx. not cool down
ten minutes. after ten minutes.
(1) Blockage of refrigeration
Normal
cycle
(2) No coolant
In the case of no coolant,
evaporator inlet port cools
down, but outlet port does not.
Criteria for judgment of main circuit board malfunction
(1) Load which should be moving is not moving. If voltage is not detected at the terminal, the problem is the main board.
(2) Load which should be moving is not moving. If voltage is detected at the terminal, the problem is the load.
(3) When it is not determinable, disconnect the wiring of the load that is not moving from the main board, apply voltage directly
to the load to checkif the load is normal. If the load is normal, the problem is the main board.
Check operation
No response Some response to remote controllor and main body switch
Chock main body
terminal block voltage
No voltage Voltage 115V
Power supply cord faulty
Change each mode.
OK
Main board malfunction
Compressor does not run
within five minutes. Cool
side air blower runs.
Warm side air blower
does not run.
(1) Thermistor
malfunction
(2) Main board
malfunction
11
Response to No response to remote control.
remote control Response to main body switch only.
Synchronize remote control
When problem cannot be solved
Check in the following order:
(1) Remote control battery exhaustion
(2) Check junction circuit continuity o
NG
fmain board and switch board
(3) Remote control malfunction
(4) Main body switch board malfunction
(5) Main board manlunction
Compressor does not run
within five minutes.
Cool side air blower runs.
Warm side air blower
runs.
(1) OLP malfunction
(2) Compressor
malfunction
(3) Main board
malfunction
(See page 6.)
Either cool side air blower
or warm side air blower
does not run.
(1) Malfunction of air
blower which is not
running
(2) Main board
malfunction