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TROUBLESHOOTING
Failure Codes
The HM1600 Microwave monitors its operation and displays a Failure Code when a problem occurs.
CODE CAUSE WHAT TO DO
• Unplug the oven to stop beep.
• Wait for oven to cool down to reset
operation.
• If food ignites, do not open the door.
If normal operation does not resume, call
the service agent with information of failure
code.
• Check line voltage and that voltage
adjustment is matched. (Refer to page 7
for power source voltage adjustment.)
Line Volt Connector Color
208 V White
220-240 V Black
• If the line voltage is other than 208 or 220-
240 V, consult electrician to check outlet.
• Unplug the oven and wait more than 1
minute and reconnect.
• If normal operation does not resume, call
the service agent with information of failure
code.
F01
F03
F04
F05
F33-F34
F44
F81-F84
F86-F89
• Overcooked food.
• Temperature of exhaust air too
high.
• Incoming line voltage too high.
This oven is designed to operate
with 208 or 220-240 Volts.
• Incoming line voltage too low.
• Problem with Memory IC.
• Problem with thermistor circuit.
• Problem with control panel.
• Problem with relay circuit.
SERVICE
Contact your local Hobart Service Office if the oven does not operate as described. Long term service
contracts are available on this and other Hobart products.
FORM 33971 (10-99) PRINTED IN U.S.A.
Above codes do not indicate all the possible failures on the oven.