
Operation / Technical Manual
NORM-O-TEMP
®
, Model 111W
Page 67 of 82
Observation
Possible Problem
Action To Be Taken
M. Unit is set to operate
but fluid does not heat.
Water not circulating.
Defective heater
Defective power supply
board.
See observation N.
Replace heater. See Section
Replace power supply board.
See Section 6-15.
N. Unit is set to operate.
Water temperature not
accurate or jumps up and
down.
Defective microprocessor
board and control board.
Replace microprocessor
control board.
See Section 6-16.