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TAblE 1 – Troubleshooting Guide
Symptom
No power to the
control .
Control does
not turn on
humidifier .
Display does
not flash all LCD
segments during
Test Mode .
Display shows
EE .
Inaccurate
humidity reading .
P.O. Box 1467 • Madison, WI 53701-1467 • Phone: 800/334-6011 • Fax: 608/257-4357
61000790 10 .11
B2205457B
12
61000790B AA Model 65 Humidifier Control Install.indd 12
Possible Reason
Incorrect wiring .
No power to humidifier .
No power to HVAC
equipment .
Incorrect wiring .
LCD error .
Control detected an
internal error .
Control recently installed
after being stored in an
uncontrolled temperature
and humidity environment .
Offset has been applied to
the humidity reading .
Control is mounted in direct
sunlight, above a heat or
humidity source, or in the
path of a supply register .
www.aprilairepartners.com
Troubleshooting Procedure
Verify wiring connections between control,
humidifier and HVAC system (where applicable) .
• V erify that the humidifier is wired correctly.
• V erify the circuit breaker has not tripped.
• V erify HVAC system switch is on.
• V erify the circuit breaker has not tripped.
Verify wiring connections between control and
humidifier .
Replace control .
Replace control .
Allow 48 hours for control to acclimate.
Change the offset .
Relocate the control .
© 2011 Aprilaire – A division of Research Products Corporation
Printed in U .S .A .
10/12/11 9:47 AM
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