Alto-Shaam 1000-TH-II - Manual (Page 20)

TH-II INSTALLATION / OPERATION / SERVICE MANUAL PG . 19
T R O U B L E S H O O T I N G C H E C K L I S T
TROUBLE POSSIBLE CAUSE REMEDY
Unit does not operate. Insufficient electric power unit. Check power source.
Defective plug or cord. Check and repair if necessary.
Power switch defective. Replace.
Cooking temperature not correct. Cook thermostat out of calibration. Calibrate.
Holding temperature not correct. Hold thermostat out of calibration. Calibrate.
Timer runs down, but oven will not Timer not de-energizing cook circuit. Replace timer.
go into HOLD.
Cook thermostat erratic — will not Cook thermostat. Replace thermostat.
hold calibration.
Hold thermostat erratic — will not Hold thermostat. Replace thermostat.
hold calibration.
Oven goes from cooking Hold thermostat. Replace hold thermostat.
temperature to cold.
Oven will not go into cook cycle Timer or contactor. With timer turned ON, line
when timer and cook thermostat voltage should appear across
are ON. terminal 2 and 3 of timer. If not,
replace timer.
If line voltage does appear across
terminal 2 and 3 of timer, it should
also appear across holding coil
of contactor.
If line voltage does appear across
holding coil, and it won’t close its
contacts, replace contactor.
It takes too long to cook. Heating element open, resulting in Replace element.
(Temperature O.K.) low wattage.
Cannot control temperature but Heating element grounded. Replace element.
thermostats check O.K.
S E R V I C E
D A N G E R
DISCONNECT UNIT FROM
POWER SOURCE BEFORE
CLEANING OR SERVICING.