9
9.06
No Display
9.05
Too much heat
Troubleshooting Procedures
Problem
Procedure
9.04
Unstable temperature control
5.
Check TRIAC (High voltage output of control board)
A. Make sure power is disconnected from the unit.
B. Connect an AC voltmeter across the heater capable of
reading 120 or 240 volts, depending on your particular unit.
C. Turn power on and select a set point higher than the actual
temperature to get the HEATER ON indicator to illuminate.
With the HEATER ON indicator lit, there should be either
120 or 240 volts across the heater. If not, the control board
should be replaced.
1.
Use gable cover provided to improve temperature control.
2.
Verify that temperature setpoint is set at desired value.
3.
If control is stable, but not at desired temperature, check set
temperature or perform calibration (Paragraph 7.0, Step 5).
4.
Check Temperature Probe (see Paragraph 9.03, Step 2).
1.
Check Temperature Probe (see Paragraph 9.03, Step 2).
2.
Check TRIAC (see Paragraph 9.03, Step 5).
1.
Verify that the water bath is plugged in.
2.
Verify that Power switch is in the on position.
3.
Disconnect unit from the electrical supply, gain access to the
control board and check Fuse 1 located near the transformer
on the control board.
