Anden A77 Installations- und Betriebsanleitung - Seite 7
Blättern Sie online oder laden Sie pdf Installations- und Betriebsanleitung für Controller Anden A77 herunter. Anden A77 9 Seiten. Dehumidifier control
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TROUBLESHOOTING
Use the guide on the following page to help find and correct system faults. Contact Technical
Support before replacing the control or for additional troubleshooting. Technical Support is
available Monday through Friday, 7:00 a.m. to 5:00 p.m. CST, at (800) 972-3710.
ERROR CODES
When the control detects an internal error, it will stop
controlling, deactivate the dehumidifier output, and
the LCD will display the Error Code. See FIGURE 8.
The control will attempt to recover from the error
every 10 minutes. The Error Code will continue to be
displayed as long as the error condition exists. Button
presses are not registered when in Error Mode.
Cycling power to the control will not clear the code
and the control will need to be replaced.
DEHUMIDIFIER DIAGNOSTIC CODES
When a dehumidifier error occurs, the diagnostic code will be displayed on the A77 screen.
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FIGURE 8 – ERROR CODE SCREEN
90-1636
TABLE 1 – TROUBLESHOOTING GUIDE
Symptom
Possible Reason
No power to the
Incorrect wiring.
control.
No power to dehumidifier.
No power to HVAC
equipment.
Control does
Incorrect wiring.
not turn on
dehumidifier
output.
Blank display
LCD error.
or missing
segments during
Test mode.
Display shows Er.
Control detected an
internal error.
Inaccurate
Control recently installed
humidity reading.
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.
Troubleshooting Procedure
Verify wiring connections between control,
dehumidifier and HVAC system (where applicable).
• Verify that the dehumidifier power switch is ON.
• Verify the circuit breaker has not tripped.
• Verify HVAC system switch is on.
• Verify the circuit breaker has not tripped.
Verify wiring connections between control and
dehumidifier.
Replace control.
The control will need to be replaced.
Allow 48 hours for control to acclimate.
Change the offset.
Relocate the control.
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