Test D: Minimum Motor Speed Error - Norcold DE0041 Series Service Manual

Test D: Minimum Motor Speed Error

Series DE/EV0041, Series DE/EV0061, DC0061
Complete the "Diagnostic Pre-Checks."
Remove refrigerator from enclosure,
but keep a power supply (either AC
or DC) connected.
Make sure:
- Upper and lower vents are not
blocked.
- The refigeratgor is not overloaded
with hot items.
- The ambient operating temperature
is lower than 131°F (55° C).
- If DC power is not connected, a
minimum of 90 VAC is present
Measure input voltage.
- 12 VDC nominal inout voltage is
10.9 - 17.0 VDC.
- 24 VDC nominal input voltage is
23.8 - 31.5 VDC,120 VAC or
240 VAC.
Is
input
NO
voltage within
specification?
YES
Is
YES
unit
overloaded?
NO
Is fan
YES
operating,
coils clean/not
blocked?
NO
Correct input voltage.
Reduce load on unit.
Replace cooling unit.
Relace control module.
16
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