| Troubleshooting
10-64
|
330985H01
1100°C Box Furnace
Chapter 10
Table 6
Furnace Troubleshooting
Problem
Solution
Furnace temperature
runs away.
Check solid-state relay:
Disconnect controller source to solid state relay.
Connect power to furnace. If the heating unit heats, replace
the solid-state relay.
Furnace does not heat.
Front panel red indicator light is on:
If the controller run or local light is off, check that the setpoint
temperature is higher than the furnace display temperature.
If the controller run or local light is on, disconnect power from
the furnace and check the heating element for continuity.
Front panel red indicator light is off:
Check that the power switch is on.
Check that the indicator lights on the controller display are
on.
Check that the furnace door is fully closed.
Check that the door interrupt switch is engaged when the
furnace door is fully closed.
Check the electrical wires for visible damage.
Replace the electrical wires if necessary.
Check that the deviation high alarm setpoint on the
controller is set higher than the operating temperature.
Summary of Contents for BF51728
Page 11: ...Safety Notes Chapter 1 1 10 330985H01 1100 C Box Furnace...
Page 15: ...Introduction 2 14 330985H01 1100 C Box Furnace Chapter 2...
Page 27: ...Start Up 5 26 330985H01 1100 C Box Furnace Chapter 5...
Page 63: ...Maintenance 9 62 330985H01 1100 C Box Furnace Chapter 9...
Page 69: ...Wiring Diagram 10 68 330985H01 1100 C Box Furnace Chapter 10...