Amana AVZC20 Series User Manual

SERVICING
62
INDOOR UNIT ERROR CODES
Symptoms of Abnormal Operation
(Legacy & ComfortNet™ Thermostat)
7-Segment LED
Codes
Characters
Will Alternat
e
Fault Description
ComfortNet™
Thermostat Only
Possible Causes Corrective Actions Notes & Cautions
Message Code
• LED display is ON continuously
ON
• Normal operation
None None
• Normal operation • None • Normal operation
• Electric heaters fail to energize on a
call for W1 or Auxiliary/Emergency heat
• Integrated control module LED
display provides the indicated error code.
• ComfortNet™ thermostat “Call for
Service” icon illuminated
• ComfortNet™ thermostat scrolls
“Check Air Handler” message
EC
• Heater kit selected
via dipswitches is too large for heater kits specified in shared data set
HTR TOO
LARGE
EC
• Heater kit selected via
dipswitches is too large for heater kits in shared data set
• Verify electric heat
dipswitch settings
• Verify the installed electric
heater is valid for the air handler blower. Check nameplate or Specification Sheet applicable to your model* for allowable heater kit(s).
• Verify shared data set is
correct for the specific model. Re-populate data using correct memory card if required.
• Turn power OFF prior
to repair.
• Use memory card for
the specific model.
• Insert memory card
BEFORE turning power ON. Memory card may be removed after data is loaded.
• Turn power off before
removing memory card.
• Electric heat airflow is higher than
expected on a call for W1 or Auxiliary/Emergency heat
• Integrated control module LED
display provides the indicated error code.
EC
• Heater kit selected
via dipswitches is too small for heater kits specified in shared data set
HTR TOO
SMALL
EC
• Heater kit selected via
dipswitches is too small for heater kits in shared data set
• Verify electric heat
dipswitch settings
• Verify the installed electric
heater is valid for the air handler blower. Check nameplate or Specification Sheet applicable to your model* for allowable heater kit(s).
• Verify shared data set is
correct for the specific model. Re-populate data using correct memory card if required.
• Turn power OFF prior
to repair.
• Use memory card for
the specific model.
• Insert memory card
BEFORE turning power ON. Memory card may be removed after data is loaded.
• Turn power off before
removing memory card.
• Electric heat airflow is higher than
expected on a call for W1 or Auxiliary/Emergency heat
• Integrated control module LED
display provides the indicated error code.
EC
• Heater kit selected
via dipswitches does not heater kits specified in shared data set
NO HTR
MATCH
EC
• Heater kit selected via
dipswitches is doesn’t match heater kits in shared data set
• Verify electric heat
dipswitch settings
• Verify the installed electric
heater is valid for the air handler blower. Check nameplate or Specification Sheet applicable to your model* for allowable heater kit(s).
• Verify shared data set is
correct for the specific model. Re-populate data using correct memory card if required.
• Turn power OFF prior
to repair.
• Use memory card for
the specific model.
• Insert memory card
BEFORE turning power ON. Memory card may be removed after data is loaded.
• Turn power off before
removing memory card.
• Integrated control module LED
display EF error code.
• ComfortNet™ thermostat “Call for
Service”.
EF
• Aux switch open
Aux
Alarm
Fault
EF
• High water level in the
evaporation coil.
• Check overflow pan and
service
• Turn power OFF prior
to service.

Amana AVZC20 Series Specifications

General

Brand	Amana
Model	AVZC20 Series
Category	Heat Pump
Language	English