Dometic RM 2801 Service Manual download pdf (Page 48)

(121)

When beginning to diagnose the heating

element circuit, keep in mind that an

approximate DC voltage of 13.3 to the

terminal block is required to engage to 12 volt

DC heating element. Any voltage lower than

13.3 will prevent DC operation and the

refrigerator will operate on the LP gas mode.

(122)

After verifying that the 12 volt battery circuit

is wired properly and that the proper gauge

wire size has been utilized. Check the DC

voltage at the terminal block to insure that at

least 13.3 volts is available to energize the 12

volt heating element.

(123)

If proper voltage is available at the terminal

block and the refrigerator is still not

operational on 12 volts, the DC relay needs to

be diagnosed.

(124)

Gain access to the relay and make sure the

ignition switch is turned to the off position

and voltage is not present at the ignition lock

terminal. DC voltage should be present

between terminals 85 and 30 on the relay. If

voltage is not present, recheck all 12 volt

connections.

Pay close attention to the

connections on the positive terminal, as this is

where the 30 terminal attaches.

A-6-41

48

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