Thetford N3000 Series Troubleshooting Manual page 11

Error code 8: AC heater current is measured to be
Input AC voltage is between 190
VAC and 260 VAC
Yes
Check if the fuse is OK
Before 3-3-2014 = 4A
Serial number < E062R1000006
After 3-3-2014 = 2A
Yes
Check if the heater is using
current (+/- 1 A Large fridges +/-
0.7 A Small fridges)
Yes
Check the resistance of the
heater, is this between min and
max?
Yes
Production date of the fridge?
75% below nominal current.
!!!Note: put fridge off when
measuring resistance off the heater!!!
No
Heater resistance:
Type
N3080
N3090
N3100
N3104
No
N3108
N3112
N3115
N3145
No
N3150
N3175
Before 22-6-2015?
Serial number < E173S....
After 22-6-2015?
Serial number >/= E173S.....
No
MinΩ MaxΩ
302 389
302 389
302 389
302 389
302 389
302 389
302 389
210 270
210 270
210 270
Use for LED:LED KIT:SR 691138
Use for LCD:LCD KIT:SR 691139
Replace power board assembly
N3000 - series
AC input issue
non fridge
related
No
Change fuse
No Replace the
AC heater
No
Replace the
AC heater
(691101)