Fan and Heater
SMART BOARD
"SMART BOARD" is the name of the new printed circuit board in your heater. The purpose of this new board is to simplify the procedure for checking out the heater in case of a malfunction. "SMART BOARD" uses a series of lights to check for power at various locations in the heater circuit. Lights that are lit have power going to those components or loca- tions, lights that are not lit indicate a lack of power at the terminal or location. During the operation of the heater, some check points should have power and some should not have power. The lights are num- bered (1 through 7, A and B). Following is informa- tion to help identify which lights should be lit, what problem may exist and explain the operation of the
SMART BOARD.
If a problem should occur, by following the instructions, the reason a heater does not maintain flame should be easily deter-
mined. As with any
If the heater unit does not operate properly, remove the electrical box cover and look at the
Standard Heaters ( not HI-LO fire):
When standard heater units are first turned on the and the purge time is completed (10 seconds),
HI-LO Fire Heater
On
When the plenum chamber reaches the preset tem- perature of the
The information below lists the light number(s) and what they indicate. Follow the chart down to the appropriate condition the unit is in, then read across to the explanation. Once the problem has been identified, you can proceed to fix the problem.
NOTE: Remove power and inspect all electrical connections before any other troubleshooting. If any connections are loose, tighten them and retry opera- tion.
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