A.J. Antunes & Co MS-250 9100439 - Manual (Page 11)

11 P/N 1010984 Rev. D 03/12
TroubleShooTinG
problem possible Cause Corrective action
Control Display is blank (power is on
but indicator light is off). The power cord is not correctly plugged in. Plug the power cord into the appropriate outlet.
The power cord and/or electrical plug is damaged. Inspect electrical wire, plug, and receptacle.
The main electrical panel circuit breaker is off or has
been tripped. Reset circuit breaker. Contact your maintenance per-
son or Authorized Service Agency if it trips again.
Switch is inoperable. Contact your maintenance person or Authorized
Service Agency for service.
Control Display is blank (power is on
and indicator light is on). Control Board is inoperable Contact your maintenance person or Authorized
Service Agency for service.
Transformer is inoperable.
Loose, burnt, or broken wires in circuit.
Unit does not heat up (Control Display
is on). Hi-Limit Thermostat is tripped or inoperable. Reset the Hi-Limit Thermostat according to the
Operations section of this manual. If the Hi-Limit
Thermostat requires continuous resetting, contact
your Authorized Service Agency for service.
Solid State Relay is inoperable.
Thermocouple is inoperable.
Control Board is inoperable.
Steam Generator is inoperable.
Loose, burnt, or broken wires in circuit.
The unit’s main electrical panel
circuit breaker trips. Damaged receptacle, plug, or cord; a loose connec-
tion; or an internal component failure. Turn the unit off, allow it to cool to room tempera-
ture, and then restart. Contact your maintenance
person or Authorized Service Agency if the condition
repeats.
Water leaking inside electrical
housing. Pinhole leak in rubber hoses (MS-150). Replace hoses.
Loose or damaged water line tubes and/or fittings
inside electrical housing. Tighten or replace tubes and/or fittings.
“Err” appears in the Control Display. Programming and/or SHO and H2O values were
adjusted/changed improperly. Reset the Control Board as described in the
Programming section of this manual. See Fault
Codes.
WarNING
To avoid possible personal injury and/or damage to the unit, inspection, test, and repair of electrical equipment should be performed by qualified
service personnel. The unit should be unplugged when servicing, except when electrical tests are required. Use extreme care during electrical circuit
tests. Live circuits will be exposed. If the troubleshooting steps listed below do not solve your machine’s problem, contact an Authorized Service
Agency for further assistance.