Norcold N500 - No DC Operation - N500.3 (3-Way Units Only)

DRAFT
NOT FOR PUBLIC RELEASE
10
www.norcold.com/cda
N500/N510 Models
Refrigerator Service Manual
No DC Operation - N500.3 (3-Way Units Only)
DC voltage
present?
DC voltage
present?
Before beginning this procedure make sure:
■
The refrigerator is receiving dc power from the RV dc power system.
■
Voltage across terminal block connections 7 and 8 is at least 12 Vdc.
■
Fuse holder and 25 amp fuse are in good condition.
■
Selector switch is set to "DC."
Check for loose or damaged wiring.
Repair or replace as necessary.
NO
YES
Check voltage output from
selector switch terminal 4b.
NO
Replace selector switch. See page 45.
YES
Connections
good?
Check dc heater wiring
connections.
NO
Repair or replace wiring.
Check dc voltage input at
selector switch terminal
4a.
YES
Resistance
1.2 to 1.4?
Check dc heater resistance.
NO
Replace dc heater. See page 30.