Fault Conditions
LED Indication Fault Mode
Off Normal Operation
1 Flash At Power Up
2 Flashes Flame Without Call For Heat
3 Flashes Ignition Lockout
4 Flashes (70458701 only) Manual Reset Error
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Fault Conditions
Steady On Internal Control Failure
NOTE: The LED will flash on for 1/4 second, then off for
1/4 second during a fault condition. The pause between
fault codes is 3 seconds.
Internal Control Failure
If the control detects an error in its software or hardware, all out-
puts are turned off and the red LED displays a steady ON condi-
tion. If this condition persists after an attempt to restart, then the
control must be replaced.
Troubleshooting
Troubleshooting Guide
Symptom Probable Cause
Control in Lockout Mode (70458701 Control Only) Manual reset of the control is needed. Reset by pushing red
lockout button or use front end control.
Control does not start, green LED is off 1. 24 VAC present between 24V and ground on 70458701 only.
If not, see machine schematic.
2. 24 VAC present between TH and ground. If not, see machine
schematic.
Thermostat on, no spark or valve 1. Cable connects to control and electrode. Voltage present at
gas valve.
2. Bad control. Check red LED for steady on or flashing codes.
Valve on, no spark during TFI 1. Shorted electrode.
2. Spark gap not correct. Set to .094-.156 inch.
3. High voltage cable is faulty or has a poor connection.
4. Control failure.
Spark on, no flame 1. Is gas on?
2. 24 VAC at gas valve.
3. Bad control. Check voltage between gas valve terminal MV
and GND on control.
Flame okay during TFI, no flame sense after TFI 1. Check electrode position and cleanliness.
2. Check high voltage wire.
3. Poor ground at burner.
4. Poor flame, check flame current.
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Operating Instructions
©
Copyright, Alliance Laundry Systems LLC -
DO NOT COPY or TRANSMIT
74 Part No. 70458101ENR10
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