Robertshaw 9555 - Manual (Page 11)

◆ Backlit Display
This thermostat is equipped with a backlight to make nighttime tempera-
ture adjustments quick and easy. Press the button to activate the
backlight. The backlight will turn off after about 15 seconds of inactivity.
◆ Reset
To reset the thermostat to factory preprogrammed conditions,
press the RESET button located beneath the lower left corner
of the display.
Step 5: Troubleshooting
Symptom Remedy
11
If problems with thermostat cannot be resolved, call:
Technical Support: (800) 445-8299
Monday-Friday 7:30 AM - 5:30 PM CST
RESET Switch
W1
Y1
B
O
G
W
2
Y
2
NON HP
Thermostat does not turn on system. Check wiring (see Installation
section).
Increase temperature differential
(see Changing the Temperature
Differential section). Thermostat turns system on and
off too frequently.
System fan does not operate
properly. Move fan option switch to either
gas or electric, to match system
(see Installation section).
Check F/C (Fahrenheit/Celsius)
setting. See Changing Fahrenheit
(F) to Celsius (C). Thermostat does not display
proper room temperature.
Call technical support. Er on display
110-975D En.qxd 5/13/03 2:43 PM Page 11 (Black plate)