Technical information

Troubleshooting Procedures
Trouble 4: Oven operates with little or no heat.
Output
performance
is low.
Check the power
supply voltage.
Lower than
90% of rated
voltage.
Decrease in
supply voltage
under load.
Customer must
contact local
power
company or
qualified
electrician.
Normal
Disconnect wire leads
from relay RY3.
Verify on and off times.
Abnormal
Normal
Failed
controller.
Replace
controller.
Abnormal
Failed
ma
g
netron
Replace
ma
g
netron.
Measure the
output power.
NOTE: Simple output power test can be conducted by heating one liter of water for 33 seconds.
Refer to Power Test on page of this manual.
Check for continuity of relay 3 with an omhmeter.
(Remove wire leads from relay 3 and operate unit.)
Power Level Cycle ON Cycle OFF
1 3 sec. 9 sec.
2 4 sec. 8 sec.
3 5 sec. 7 sec.
4 6 sec. 6 sec.
5 7 sec. 5 sec.
6 8 sec. 4 sec.
7 9 sec. 3 sec.
8 10 sec. 2 sec.
9 11 sec. 1 sec.
10 12 sec. 0 sec.