Fault Assessment Of Indoor/Outdoor Unit - Sanyo SAP-KMV91G-S Technical & Service Manual

11-3. Fault Assessment of Indoor/Outdoor Unit

11-3-1. Fault Assessment of Indoor Unit
No. Operation
1 Set operation selector of indoor unit
to DEMO and start operation using
remote control unit.
If no abnormality is detected, carry out fault assessment of the outdoor unit.
11-3-2. Fault Assessment of Outdoor Unit
No. Operation
1 Apply rated voltage of 220 VAC
between 1 and 2 of terminal block on
outdoor unit.
2 Short-circuit the COM and T-RUN ter-
minal in outdoor unit.
If no abnormality is detected, carry out fault assessment of the indoor unit (if not previously done).
How to use the TEST/T-RUN terminals
T-RUN: Test run (compressor, fan motor are all ON)
TEST: Time-scales are reduced to 1/60 (operations occur 60 times faster than normal), and electric-pow-
ered expansion valve is fully opened.
TEST/T-RUN terminals
COM T-RUN TEST
Checkpoints (conditions of the unit)
Rated voltage of 220 VAC exists for inter-unit wiring between 1 and 2.
Connect 2 and 4 with a 5k½ resistor. Measurement of the voltage
between these must show 12V to 15V, with fluctuation occurring once
every 4 seconds.
Or insert LED jig and LED should flicker once in 4 seconds.
Checkpoints (operation of the unit)
RED LED (red) on control board should turn on.
Compressor and fan motor should all be ON.
White
40