White Rodgers SuperStat Pro SuperStat Pro Programmable Thermostat User Manual page 36

Troubleshooting Assistance Guide
Thermostat Display
(continued)
34
Display is Flashing.
•
If flashing between time and temperature setpoint – Normal operation for the unit.
•
If flashing COMM ERR – call Customer Service toll free at 1-888-232-5949.
•
If flashing AUX and +2 – Normal operation. With a heat pump, indicates the
resistance strip heat (Aux) is operating in conjunction with the heat pump compressor.
•
If +2 on lower right of display – Normal operation. For a two-speed compressor,
indicates that the compressor is operating in the high speed.
•
If flashing HOLD – Normal operation. Indicates a temporary hold is in place. Press
RUN to reset.
The green light stays On, it does not flash (Green light next to the UP/DOWN
buttons).
Normal operation. Indicates that a Critical Event is in effect.
The green light stays On, it does not flash, the UP/DOWN buttons do not work.
If the green light is On and the buttons will not change the display, your thermostat may
need service. Call Customer Service toll free at 1-888-232-5949.
SuperStat Pro User Guide