Reading The Led; Self-Test Diagnostic Chart; Diagnostic Symptom Chart - Norcold DE105 Service Manual

Troubleshooting, Cont'd
5. Connect the 12 VDC input wire
blade (B) .
5 5
C
Fig. 3.5 -
LED connection to control module

Reading the LED

If an error code is activated in the control module and the LED is
connected, it will fl ash a number of times. The number of fl ashes
will depend on what error was recorded. Each fl ash will last 1/4
second and after the code is fl ashed there will be a delay, then the
code will repeat.
Write down all error codes; then refer to "Self-Test Diagnostic
Chart" below.

Self-Test Diagnostic Chart

Flashes Description
1 Battery Protection Cut-Out.
The voltage is outside the cut out setting.
2 Fan Over current Cut-Out.
The fan electrical load is more than 1.0 amp.
3 Motor Start Error.
The rotor is blocked or the differential pressure in the
refrigeration system is too high ( >5 bar).
4 Minimum Motor Speed Error.
The motor can not maintain minimum speed (1850
rpm).
5 Thermal Cutout of Electronic Unit.
The electronic unit is running too hot.
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(C) to the other side of adapter
B
_
12/24 Vdc
+
F
A
C
D
C
P
T
Action
Perform Test A.
Perform Test B.
Perform Test C.
Perform Test D.
Perform Test E.

Diagnostic Symptom Chart

Problem Possible Cause
Refrigerator Not Faulty thermostat.
■
Faulty power to control module.
Cooling, Not ■
Broken wire from module to compres-
Turning On. ■
sor.
Faulty control module.
■
Faulty compressor.
■
Refrigerator Gets Bad capillary tube position.
■
Faulty thermostat.
Too Cold. ■
Faulty control module.
■
Refrigerator Builds Outside air entering refrigerator due to:
■ Door not closed.
Frost Inside.
■ Damaged door gasket.
■ Air leak around foam plug.
Refrigerator Runs, ■ High ambient temperatures.
But Does Not Cool ■ Blocked air ventilation.
■ Frost build up.
Properly.
■ Condenser coil restricted.
■ Faulty condenser fan.
■ Faulty cooling unit.
7
Action
Perform Test F.
Perform Test G.
Perform Test H.
Perform Test I.
SERVICE MANUAL