Movincool Classic Plus 14, Service Manual

Page: 36 / 46

TROUBLESHOOTING AND REPAIR
31
Inspection of Drain Switch
Inspection of Compressor Motor
Inspection of Fan Motor
13. Inspection of Drain Switch
Check for continuity between terminals 1 and 2.
Continuity should exist. With switch depressed,
continuity should not exist between terminals 1
and 2. If continuity is not as specified above,
replace the switch.
14. Inspection of Fan Motor
Measure resistance across the terminals of the
fan motor.
Terminals (at 77˚F (25˚C))
J6 - CF1
Approx. 3.5 Ω
J5 - CF1 Approx. 4.7 Ω
CF1 - CF2 Approx. 30.4 Ω
If the measured resistance is not equal to these
standard values, replace the fan motor.
15. Inspection of Compressor Motor
Measure resistance across the terminals of the
compressor motor.
Terminals (at 77˚F (25˚C))
R – C
Approx.1.1
Ω
C – S Approx.2.7
Ω
S – R Approx.3.3
Ω
If the measured resistance value is not equal to
these standard values, replace the compressor.
The compressor uses an external overload relay.
For overload relay specification see chart on
page 16.
16. Inspection of Wiring Connection
Refer to the Wiring Diagrams (pg. 40) and check for connection of each wire.
17. Inspection of Thermistor(s)
Using an Ohmeter, check the resistance value across the 2-Pin connector. At normal temperature (77˚F,
25˚C) either thermistor (Room or Freeze) should measure approx. 10,000 or 10k ohms.
2
NC
C
1
DS2
DS1
To J103
DRAIN
SWITCH
TOP OF
BASE
PLATE
CF1 (White)
CF2 (Brown/White)
J5 Low (Red)
J6 High (Black)
Ground
(Green/Yellow)