A G-TRAC2 MANUAL
General Manual Revised: 03/15/99
Irregular Flash The combustion blower is off but the combustion air-proving switch is closed or shorted. This
indicates a wiring, set up, or part failure problem.
Fast Flash The actuators controlling the air and gas are not in the correct position for pre-purge or ignition.
The G-TRAC2 is attempting to reposition the motors.
On The pre-purge timer is active and the heat changer is pre-purging.
LED 2 Heat Required
Off There is no heat call or both the fan and heat switch are off.
Slow Flash There is a heat call but an open switch is keeping the burner and possibly whole unit off. (Heat
switch or Fan switch – day.)
Irregular Flash Dipswitch 5 is in the service position and the fan switch is on.
Fast Flash There is a flame failure but the logic is allowing the blower to operate. The unit is allowed to trip
on low limit if the discharge falls below 40ºF. This option is only active if dipswitch A-4 is on, and
low limit function was activated. (Airflow priority program).
On There is a valid heat call and the system is functioning normally.
LED 3 Lockout Flame Failure or Low Limit
Off The blower is off or discharge temperature is above 40ºF and the fan is running.
Slow Flash Discharge temperature is below 40ºF but the low limit bypass timer is still operating.
Irregular Flash Blower is being delayed. The supply fan will start once the damper open delay and or the heat
exchanger warm up delay is complete.
Fast Flash The discharge sensor resistance is greater than 4000 ohms or is open circuited.
On Low limit lock outer flame failure lockout.
NOTE: If there is an intermittent problem with the discharge sensor, a false low limit lock out code may be
generated.
LED 4 Burner
Off The flame relay or ignition control device is not energized.
Slow Flash Trial for ignition. The flame relay has been energized, but the main flame has not been proven.
Irregular Flash The G-TRAC2 is detecting the gas valve is open when it has not energized the flame relay. The
combustion blower will operate at full capacity if this wiring check safety problem is detected.
Fast Flash Flame failure. The flame failure code/function is disabled if the service switch is on or under some
modes of operation. See Page 6. A false Flame Failure code may occur if the externally wired
High Limit control is not wired to interrupt the power terminal HS as well as the valve.
ON The flame relay or ignition control device is energized. The ignition control device now has the
responsibility to light the pilot flame, prove the pilot flame, and then energize the main valve.
(30 paginas)
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