Honeywell MAGICSTAT 3355 - Manual (Page 33)

33 69-1012
Heating will not come on.
(Continued) ■ Jumper wires R and W. If heat does not come on, contact
your heating dealer.
■ If display is blank or shows bAt Lo, install fresh batteries.
■ If temperature setting is higher than current temperature,
and the display shows HEAT, contact Honeywell
Customer Assistance at 1-800-468-1502.
Cooling will not come on. ■ Check that the switch on the thermostat is set to COOL.
■ Check the system fuse or circuit breaker and replace or
reset if necessary.
■ Check for correct wiring and good connections.
■ Jumper wires Rc and Y. If cooling does not come on,
contact your cooling dealer.
■ If display is blank or shows bAt Lo, install fresh batteries.
■ The thermostat has a built-in time delay on cooling. Allow
five to ten minutes after changing the setting before the
air conditioner starts.
■ Make sure the outdoor disconnect is energized (on).