Question about Air Conditioners
My honeywell st7100 CH & HW controller has suddenly stopped working and fails to respond when i try to swith on either the CH or HW via the 'manual switch-on' or 'extra hour' options by pressing the buttons. The unit is approx 18 years old. Does anyone have any ideas what may be causing the problem ??
Pull the unit straight out and away from the wall. It is plugged into the baseplate. The batteries are behind or among the 30 pieces in your hand and on the floor,,,, AH! Just kiddng, you wil see the batteries on the backside.
When pulling off use gentle rocking as you pull. You will see why when it is off. To reinstall, just line up the oinds and press in place.
Posted on Oct 27, 2009
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