TRANE XE70 GAS FURNACE – HSI only works once

hvac

My TRANE XE70 Gas Heater HSI (hot surface igniter) will glow hot once and heater works fine, but then doesn't work anymore on the Thermostat cycle.
I've replaced Flame Sensor and HSI Module.
My White-Rodgers Control Panel flashes Yellow light on boot up, then goes to constant Green light and stays solid green.
I have already purchased and I am going to replace the Control Panel but wonder before I do that if there is something else to check for this intermittent HSI issue ?

  1. Filter is New
  2. Gas Valve is opening on commands from Thermostat
  3. Blower is functioning correctly

Best Answer

Fixed this issue by replacing the Control Board and using a longer timing program insert key from 4 seconds to 7.

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