Operator`s manual

PUREHEAT™ HYDRONIC AIR HEATER OPERATOR’S MANUAL – SECTION 6
6- 4 © 2006 Ground Heaters, Inc. V. 2, Rev. 09/01/06
6.3 BURNER CONTROL LOCKOUT
(Refer to Appendix A-13 or A-8 through A-14)
6.3.1 Gas Burner Control
The POWER light will illuminate only during the heating cycle. After flame is established, the POWER,
PILOT, MAIN and FLAME lights should all be illuminated.
If flame failure of any nature is sensed during the start up or heating cycle, the control will stop all burner
function and begin Lockout mode.
Lockout Mode
• ALARM light will illuminate
• PILOT, FLAME and MAIN lights will go out.
Momentarily press the RESET button to clear the lockout condition.
6.3.2 Oil Burner Control
The DIAGNOSTIC light (green LED) will illuminate during the heating cycle after the 15 second pre-purge
time has elapsed and flame has been established.
If flame failure is sensed during the start up or heating cycle, the control will stop all burner function and
begin one of three protective modes:
1. Recycle Mode
The DIAGNOSTIC light will flash in two second intervals while attempting three automatic restarts. If
the flame fails after three successive attempts, the control will go into Lockout mode.
2. Lockout Mode
The DIAGNOSTIC light will flash in one-half second intervals.
The RESET button must be momentarily pressed to clear the lockout and attempt a burner restart.
After three attempts to manually clear the lockout mode, the control will begin Restricted Lockout
mode.
3. Restricted Lockout Mode
The DIAGNOSTIC light will flash in one-half second intervals.
The RESET button must be pressed and held for 30 seconds or until the DIAGNOSTIC light comes
on for two seconds and then goes out.
The control will return to Restricted Lockout mode with each flame failure until one successful heating
cycle has occurred.