MovinCool 24HFU Service Manual - Manual (Page 40)

MOVINCOOL 24HFU / 24HFU-1 SERVICE PAGE 40
REPAIR - INSPECTION AND REPAIR OF ELECTRICAL SYSTEM • 24HFU-1
4-3. Inspection of Room Thermostat
Check for continuity between terminals 2 and 3,
at room temperature (16˚C/61˚F or higher).
Continuity should exist. If continuity does not
exist, replace the room thermostat.
■ Inspection of Room Thermostat
4-4. Inspection of Fan Mode Control Switch
Check for continuity between pins 1 and 2 (when
switch is set to the left as shown) and pins 1 and
3 (when switch is set to the right). If continuity is
not as specified, replace the fan mode control
switch.
■ Inspection of Fan Mode Control Switch
4-5. Inspection of Compressor Relay
Check for continuity across the terminals when the test button is depressed and when test button is re-
leased.
Depressed:
Continuity exists between each pair of opposing terminals.
Released:
No continuity exists between each pair of opposing terminals with the exception of terminals 11 and 12.
(Continuity should always exist.)
Measure the resistance across terminals A and B. Standard resistance 650 ~ 800
Ω
.
If resistance is out of range or if continuity is different than specified, replace the compressor relay.
■ Inspection of Compressor Relay