ACP ARX1 - Page 46

©2018 ACP, Inc.
Cedar Rapids, IA 52404 Page 46 of 80
Part No. 16400033
Original Instructions
Troubleshooting Chart
SYMPTOM POSSIBLE CAUSE REMEDY
Oven will not operate
No Display
Incoming Power Supply Check all electrical connections.
Check for power at wall receptacle.
Check Fuse F1.
Oven will not operate
Magnetrons
Oven door not closed Ensure that oven door is fully closed.
Check for interference.
Check door seal.
Door Interlock Switches Inspect Door Interlock Switches to ensure the switches are
mechanically actuating when door is closed and adjust if necessary.
Ensure power output from switches.
See Interlock Switch testing.
Power Relay Check power input to Coil.
Check power output.
See Power Relay testing.
Transformer Triac Check power input.
See Triac testing.
HV Transformer Do Not Test Live!
See HV Transformer testing.
HV Capacitor DO NOT Test Live!
See HV Capacitor testing.
HV Rectier/Diode DO NOT Test Live!
See HV Rectier testing.
Magnetron TCO
Error Code G2
Allow oven to cool. TCO resets at 275°F (125°C)
Check for blocked cooling air.
Check for Cooing Fan operation.
See Magnetron TCO testing.
Oven will not operate
Convection
Convection Heater Check for line voltage across terminals.
See Convection Heater testing.
Heater Triac Check power input.
See Triac Testing.
Convection Sensor (RTD)
Error Code D0 or D1
See Convection Sensor testing.
Oven TCO
Error Code G0
Allow Oven to cool then reset Oven TCO.
See Oven TCO testing.
Stirrer Motor will not
operate
Interlock Switches Check voltage across Stirrer Motor wires. Check Interlock switches
if not found.
Stirrer Motor See Stirrer Motor testing.
Convection Motor will
not operate
Convection Motor See Convection Motor testing.
Main Control Board See Oven Test Mode.
Cooling Fans will not
operate
Cooling Fan Motor See Cooling Fan testing.
Cooling Fan Relay See Cooling Fan Relay testing.
Cooling Fan Run Capacitor See Fan Run Capacitor testing.
Cooling Fan Triac See Cooling Fan Triac testing.