Thetford N3000 Series Troubleshooting Manual page 10

N3000 - series
Error code 7: No "engine run" signal is present and
control is in Manual DC mode.
!!! To know if D+ polarity is
good, select manually DC mode
and engine off. If no error code
occurs, that means that the D+
input is reversed. Ensure power
supply is capable to supply
correct amperage !!!
Input D+ voltage supplied at the
D+ input issue
No
fridge is stable between 10 V and non fridge
15 V related
Yes
Use for LED:LED KIT:SR 691138
Before 22-6-2015?
Use for LCD:LCD KIT:SR 691139
Serial number < E173S....
Production date of the fridge?
After 22-6-2015? Replace power board assembly
Serial number >/= E173S..... (691101)