P/N 1011306 Rev. D 12/17
8
TROUBLESHOOTING
WARNING
To avoid possible personal injury and/or damage to the unit, inspection, test and repair of electrical equip-
ment should be performed by qualified service personnel. The unit should be unplugged when servicing.
Problem
Possible Cause
Corrective Action
No heat, no display, and the power
switch indicator light is OFF.
Power cord is not plugged in.
Plug the power cord into the appropriate outlet.
Circuit breaker is off or has been tripped.
Reset circuit breaker, contact your maintenance person or
Authorized Service Agency if it trips again.
No power at receptacle.
Contact your maintenance person or Authorized Service Agency
for service.
Inoperable power cord.
Inoperable power switch.
Loose, burnt, broken wiring in the circuit.
No heat, no display, and the power
switch indicator light is ON.
Inoperable Transformer.
Contact your maintenance person or Authorized Service agency
for service.
Inoperable Control Board.
Loose, burnt, broken wiring in circuit.
Display flashes “LO” and the cabinet
does not heat up.
Inoperable Solid State Relay.
Contact your maintenance person or Authorized Service Agency
for service.
Inoperable Control Board.
Inoperable Heater(s).
Loose, burnt, broken wiring in circuit.
Display flashes “HI” and the cabinet
does not heat up.
Inoperable Thermistor.
Contact your maintenance person or Authorized Service Agency
for service.
Inoperable control Board.
Display flashes “HI” and the cabinet
is very hot.
Solid State Relay contacts shorted closed.
Contact your maintenance person or Authorized Service Agency
for service.
Inoperable Control Board.
Display flashes “OPEN” and the
cabinet does not heat up.
Thermistor is disconnected or open.
Re-secure the Thermistor onto the Control Board. If this prob-
lem persists, contact your maintenance person or Authorized
Service Agency for service.
Inoperable Control Board.
Display flashes “PO” and the cabi-
net does not heat up.
For 120 volt units, the supply voltage is below 100
VAC or above 135 VAC.
Contact your maintenance person or Authorized Service Agency
for service.
Inoperable Control Board.
Product dries out quickly.
Setpoint temperature is set too high.
Lower the Setpoint temperature.
LED lights do not light up.
LED Strip is damaged.
Contact your maintenance person or Authorized Service Agency
for service.
Loose, burnt, or broken wiring in Circuit.
Summary of Contents for DCH-1000
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