Thetford N145 User Manual

Thetford Fridge terminology

Product lines

• DeLuxe line refrigerators with control knobs
All refrigerators which are supplied WITHOUT the LCD display control panel.

Manual Energy Control (MEC) Piëzo (V85) Manual Energy Control (MEC) Piëzo

Manual Energy Control (MEC) Electronic Manual Energy Control (MEC) Electronic

Isphording

• DeLuxe line refrigerators with LED

Smart Energy Selection (SES) LED

• Premium LCD line refrigerators
All refrigerators which are supplied WITH the LCD display control panel.

Either Electronic Energy Selection (EES) or Smart Energy Selection (SES) Automatic

Press the left button (mode selection switch), when you see Auto on the left
side of the display you have a SES version when not, you have an EES
version

Error code 1 AC heater current is measured to be 75% below nominal current

Input supplied at the

fridge is stable and

included between

210V and 240V

YesYes

Check if the 5A fuse

is OK

Yes

Check if the heater

impedance is correct

(in Ohm)

Yes

No

No

Type Min Max

N90-N97-

N98-N100-

N104-N109-

N112-N115

N145-N150-

N175-N180

312Ω 380Ω

218Ω 266Ω

AC Input issue

Change the fuse

(part 624030)

No

Replace the AC

heater

(see Spare Parts

List)

Replace

Power board

SES version

part 631219

or

EES version

Part 631220

Error code 2 DC heater current is measured to be 75% below nominal current

Input supplied at the

fridge is stable and

included between

9.5V and 15.5V
YesYes

Check if all the

connections are OK

Yes

Check if the D+

input is included

between 9.5V and

15.5V
Yes

Check if the 20A

fuse is OK

No

No

No

No

DC input issue

Restore the

connections

D+ input issue

Change the fuse

(part 626996)

Yes

Check if the heater

impedance is correct

(in Ohm)

Yes

Replace

Power board

SES version

part 631219

or

EES version

Part 631220

Type Min Max

N90-N97-

N98-N100-

N104-N109-

N112-N115

N145-N150-

N175-N180

0.93Ω 1.13Ω

0.88Ω 1.08Ω

No

Replace the DC

heater

(see Spare Parts

List)

Error code 3 AC heater is ON when it should be OFF

Input supplied at the

fridge is stable and

included between

210V and 240V

YesYes

Replace

Power board

SES version

part 631219

or

EES version

Part 631220

Input supplied at the

fridge is stable and

included between

9.5V and 15.5V

No

AC input issue

Error code 4 DC heater is ON when it should be OFF

No

DC input issue

YesYes

Check if the D+

input is included

between 9.5V and

15.5V and if polarity
is correct

Yes

Replace

Power board

SES version

part 631219

or

EES version

Part 631220

No

D+ input issue

Error code 5 Senses flame when gas should be OFF

Check if the gas

valve works

YesYes

Replace

Power board

SES version

part 631219

or

EES version

Part 631220

Replace Power board: - SES version part 631219

No

Replace the gas

valve

Error code 6 Senses gas output terminal ON when should be OFF

- EES version part 631220

Error code 7
Senses gas output terminal OFF
when should be ON

Replace Power board: - SES version part 631219

- EES version part 631220