Service manual

120 70380601
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On Premise Micro Control (OM) Troubleshooting
47.Unit Will Not Heat – Steam (continued)
Please see following page for wiring diagram information.
TMB2284S-b
Is there
24 VAC across
the coil of the
steam valve?
No
Correct wiring
between steam
valve coil and
motor.
Does the
steam valve
coil have
continuity?
No
Replace the
steam valve
coil.
Yes
No
Connect the
steam supply.
Is the steam
supply
functional?
Yes
(10)
Replace or
rebuild the
steam valve.
Yes
Continued from
previous page