Ignition Control Operation And Troubleshooting For Models Starting 3/11/13; Internal Control Failure; Troubleshooting - Equipment Marketers GA025L Installation Operation & Maintenance

Operating Instructions
Ignition Control Operation and
Troubleshooting for Models Starting
3/11/13
70458601 and 70458701 controls cannot be serviced
by the user. If any control failures are detected,
the controls must be replaced by qualified service
personnel. Risk of explosion or fire can result if
the control module has been opened or with any
attempts to repair it and the warranty is void.
Before troubleshooting the system, check the following items:
- Verify all mechanical and electrical connections are secure and
tight.
- Verify all system wiring is correct.
- Verify there is a proper system ground. The igniter, flame
sensor and igniter module must share a common ground with the
burner. Nuisance shutdowns are often caused by a poor or erratic
ground.
- Verify that the system is powered and that the control is calling
for heat.
- If the control proceeds to an error code on the red diagnostic
LED, troubleshoot per the Fault conditions table below:

Troubleshooting

Control in Lockout Mode (70458701 Control Only)
Control does not start, green LED is off
Thermostat on, no spark or valve
94
WARNING
Troubleshooting Guide
Symptom
©
Published by permission of the copyright owner - DO NOT COPY or TRANSMIT
LED Indication
Off
1 Flash
2 Flashes
3 Flashes
W818
4 Flashes (70458701 only)
Steady On
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
outputs are turned off and the red LED displays a steady ON
condition. If this condition persists after an attempt to restart,
then the control must be replaced.
Manual reset of the control is needed. Reset by pushing red
lockout button or use front end control.
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.
1. Cable connects to control and electrode. Voltage present at
gas valve.
2. Bad control. Check red LED for steady on or flashing codes.
Fault Conditions
Fault Mode
Normal Operation
At Power Up
Flame Without Call For
Heat
Ignition Lockout
Manual Reset Error
Internal Control Failure
Probable Cause
Part No. 70476301ENR6