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FAQs 1F97-391
11. How can I get an extra
copy of the Operating
Manual for my thermostat?
12. What do I do if my
system is not working
properly and I need service?
13. What does
CHCKCHCK
CHCKCHCK
CHCK
HUMDHUMD
HUMDHUMD
HUMD on the display mean
and how do I reset it?
14. When I push the
HumidityHumidity
HumidityHumidity
Humidity button, it displays
HUMD MXHUMD MX
HUMD MXHUMD MX
HUMD MX. What does this
mean?
Visit our website at www.white-rodgers.com for operating manuals.
Contact a Local Heating & Cooling service person or visit our website at
www.white-rodgers.com to consult our “Where to Buy” Service/Dealer locator.
This feature displays the words
CHCK HUMDCHCK HUMD
CHCK HUMDCHCK HUMD
CHCK HUMD (check humidifier) after a set time of
humidifier operation. This is a reminder to maintain or clean your humidifier. When
CHCK HUMDCHCK HUMD
CHCK HUMDCHCK HUMD
CHCK HUMD is displayed, you can clear it by pressing the
HUM/FLHUM/FL
HUM/FLHUM/FL
HUM/FL
TR SERTR SER
TR SERTR SER
TR SER
VICEVICE
VICEVICE
VICE
button.
HUMD MXHUMD MX
HUMD MXHUMD MX
HUMD MX indicates the humidifier has not reached the current humidity setting in the
last 10 heating cycles. If the condition persists, a service person may recommend addi-
tional humidifier capacity.
FAQs