Page 14 of 48
Heatpipe Furnace Models 17702W, 17702P, 17702S (13
–
07/20)
USING THE OVERTEMPERATURE CONTROLLER
The furnace uses an alarm value on the controller to disable the heaters if the furnace goes into the alarm
condition. If the furnace goes into the alarm condition, it will power down the Main controller and circuitry.
Adjusting the Overtemperature value on the controller:
1. Press the Scroll button to display
A1 HI
2. Use the up/down buttons to scroll to the desired alarm setting. This would normally be 10-20°C
above the target temperature
3. To enter the value you will need to press the
PAGE
and
SCROLL
buttons simultaneously
4. To re-set the controller from an alarm condition you will need to press the buttons
again
simultaneously
5. If the controller is in the alarm condition and the complete furnace is powered down, the controller
will “remember” the condition and will still need to be manually reset when powered up again
