Service manual

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On Premise Micro Control (OM) Troubleshooting
48.Unit Will Not Heat – Electric (continued)
Please see following page for wiring diagram information.
Is there
voltage to the
output side of the
stove limit?
Is there supply
voltage to the L3-L1,
L1-L2 and L3-L2
terminals of HC2?
Yes
Check operation
of stove limit.
Replace if
necessary.
No
Correct wiring
between HC2 and
line voltage.
No
TMB2286S-b
No
Correct wiring
between HC1 and
line voltage.
Yes
(11)
(13)
Continued from
previous page
(12)
Is there supply
voltage across T1-T2,
T2-T3 and T1-T3 ?
No
Check for proper
operation of
contactors,
replace them if
necessary.
(14)(15)
Yes
Do all elements
produce heat (glow
a slight orange
color)?
Check elements
for shorts or
opens. Check
wires between
contactors and
elements.
No
Unit
operational.
Yes
Yes
Is there supply
voltage to the L1-L2,
L2-L3 and L1-L3
terminals of HC1?