Clear The Temperature Monitor Control (Tmc) Lockout State; Fig. 16 - Magnet Position - Norcold 2118IM Service Manual

Fault Codes, cont'd.
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Do not attempt this TMC validation unless
WARNING
!
you have already followed the "TMC Red
ATTENTION
Light On Solid" instructions and deter-
mined that the cooling unit does not have
a leak. Otherwise, there is a serious risk
of fire that can result in property damage,
personal injury, or death.
Clear the Temperature Monitor Control (TMC) Lockout
State
Clear the TMC lockout state (red light ON solid) shown below to
validate TMC functionality. The TMC is the black box control por-
tion of the High Temperature Monitor System.
In order to clear the lockout state (red light
NOTICE
ON solid), the conditions below must be
met. DO NOT remove the plastic cover of
the TMC.
1. Red light of the TMC is ON (solid).
2. The boiler area of the cooling unit (where the thermocouple
is mounted) has cooled to less than 250° F.
3. A magnet has been positioned as shown in Fig. 16 for five
(5) seconds.
NOTICE
If lockout state does not clear in five (5)
seconds, try using a stronger magnet.
Once the TMC lockout
state has been cleared:
1. Run the refrigerator in
AC mode.
2. Monitor operation for
24 hours.
■ Once the lockout state has been cleared, the red light of the
TMC will turn off.
■ If the refrigerator is not on, turn it on to further validate the TMC
configuration.
2118, 2118IM, 2118IMD Series
C
REPLACE COOLING
UNIT
No
Did the refrigerator cool
properly?
Yes
REPAIR COMPLETE

Fig. 16 - Magnet position

Repeated lockouts (red
light ON solid) indicate
potential cooling unit
failure - CONTACT
TECHNICAL SUPPORT
22
www.norcold.com