Step 5: Troubleshooting - Robertshaw 9400 User Manual

Step 5: Troubleshooting

Symptom
Thermostat does not turn on system.
Thermostat turns system on and
off too frequently.
Display is blank, flashing or
constant LOW BATT.
System fan does not operate
properly.
Thermostat does not display
proper room temperature.
If problems with thermostat cannot be resolved, call:
Technical Support: (800) 445-8299
Monday-Friday 7:30 AM - 5:30 PM CST
Remedy
Check wiring (see Installation
section).
Increase temperature differential
(see Changing the Temperature
Differential section).
Replace batteries.
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).
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