TROUBLESHOOTING GUIDE
12
Form No. TS2M-0210
Unit too hot.
Unit not hot enough.
Unit not working at all.
Thermostat control set too high.
Thermostat control stuck in the “on”
position.
Unit plugged into an incorrect power
supply.
Thermostat control set too low.
Location of unit is susceptible to air
currents (air conditioning ducts or
exhaust fans).
Unit not plugged in.
Unit not turned on.
Power On/Off (I/O) switch is not
functioning.
Heating element is burned out.
Thermostat control is defective.
Move Power On/Off (I/O) switch to the On (I)
position.
Contact Factory Authorized Service Agent or
Merco for assistance.
Contact Factory Authorized Service Agent or
Merco for assistance.
Contact Factory Authorized Service Agent or
Merco for assistance.
Plug unit into proper power supply.
Adjust thermostat control to a higher setting.
Block air currents or relocate unit.
Adjust thermostat control to a lower setting.
Contact Factory Authorized Service Agent or
Merco for assistance.
Verify with qualified personnel that power supply
matches unit specification.
This unit must be serviced by qualified personnel only.
Service by unqualified personnel may lead to electric
shock or burn.
WARNING
ELECTRIC SHOCK HAZARD: Turn the power switch OFF,
unplug the power cord, and allow the unit to cool before
performing any maintenance or cleaning.
WARNING
Symptom
Probable Cause
Corrective Action