Electrical Power Problems; Controller Display Does Not Turn On. No Heat In Kiln - Paragon DTC 1000 series Troubleshooting Manual

Electrical Power Problems

Controller display does NOT turn on. No heat in kiln.

Is the kiln connected to the power?
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Make sure the kiln is plugged in. If the kiln's wall circuit
includes a power disconnect lever, make sure the lever is
in the on position.
Has the circuit breaker tripped or fuse
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blown?
Is power reaching the wall receptacle?
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Test with a voltmeter.
ing this test. Do not remove the receptacle faceplate.
Follow the instructions that came with your voltmeter, setting it to the AC mode.
Insert the voltmeter
probes in the recepta-
cle's two slotted, hot
connections.
Has the kiln switch box ½ amp fuse blown?
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ter) or reads 0 ohms (analog meter), the fuse is okay. If the reading is OPEN (digital meter) or infinity/no needle
movement (analog meter), the fuse is
bad. Replacement fuse:
AGC 1/2 A 250V AC
If replacement kiln fuses keep blow-
ing, see "Kiln switch box ½ amp fuses
keep blowing," page 10.
Is the controller receiving
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power? Test INPUTS with
a voltmeter.
Plug the kiln back in. Touch voltmeter probes (in AC mode) to both INPUT con-
Disconnect
Power before nections (the white and orange wires). See diagrams, page 1.
removing
controller and
Do not let the back of the board touch a grounded object. Make sure the voltmeter is in
switch box.
the AC mode when placing the probes on INPUT connections.
 Controller Input Test Result: the controller is not getting power.
UNPLUG kiln. Check the switch box for disconnected wires between the cord, trans-
former, and controller. If wiring is okay, replace the transformer.
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Wall Receptacle
No-Load Test
This test should be performed only by an experienced repair person.
Touch only the plastic or rubber handle of the voltmeter probes dur-
Switch Box ½ Amp Fuse Ohmmeter Test
The kiln's ½ amp fuse is located in the switch box. Remove by press-
ing on the fuse holder and turning counter-clockwise half a turn. Check the fuse by placing the
probes of an ohmmeter on the ends of the fuse. If the ohmmeter reads less than an ohm (digital me-
The fuse holder is on the side of most kiln switch
boxes.
Controller Power Input Test
Make sure the kiln is unplugged, and remove the 4 screws holding the
controller board faceplate to the switch box. Lift faceplate out of box
and let the board hang on the box with the back of the board facing you.
Be sure the power disconnect
switch is in the on position.
Use an ohmmeter to test the switch box fuse.
Know the location of the circuit
breaker panel. Label the breaker that
controls your kiln's circuit.
Place voltmeter probes in the two
slotted, hot connections of the outlet.
The round connection is the safety
ground.
Disconnect power before removing
the board from the switch box.