Amana ASXC16, Service And Troubleshooting

Page: 59 / 92

SERVICING
59
Air Handler Troubleshooting Matrix (B*)
Symptoms of Abnormal
Operation
Diagnostic /
Status LED
Codes
Fault Description Possible Causes Corrective Actions
No outdoor unit operations EC1
Communication error
with outdoor unit
Improper low voltage wiring
between the indoor and
outdoor unit
Outdoor control board lost
power duirng operation
Locate and correct improper low
voltage wiring issue
Identify reason outdoor control
board lost power during operation
No Air Handler operation E05 Open fuse Short in low voltage wiring
Locate and correct short in low
voltage wiring
Replace fuse with 3-amp automotive
type
No Air Handler operation E0F
Auxilary switch
(condensate switch)
open
High water level in the
evaporation coil
Check evaporator drain pan, trap,
piping
No Air Handler operation Ed0 Data not yet on network No network data
Populate shared data set using
Bluetooth ® Shared Data Loader
BTSDL01
No Air Handler operation Ed1 Invalid shared data
Air Handler blower does not
contain an appropriate shared
data set
Populate correct shared data using
Bluetooth® Shared Data Loader
BTSDL01
Operation different than expected
or no operation
Ed4 Invalid shared data
Shared data set on
Bluetooth® Shared Data
Loader BTSDL01 has been
rejected by integrated control
module
Verify shared data set is correct for
the specifc model. Re-populate data
using correct Bluetooth® Shared
Data Loader BTSDL01 if required
No Air Handler operation Eb0
Circulator blower motor
not running with demand
present
Loose or disconnected wiring
connection at circulator
motor power leads
Open circuit in inductor or
loose wiring connection at
inductor (3/4 Hp and 1 Hp
models only)
Failed circulator blower motor
Tighten or correct wiring connection
Verify continuous circuit through
inductor.
Replace if open or short circuit
Check circulator blower motor
No Air Handler operation Eb1
Integrated control
module has lost
communications with
circulator blower motor
Loose wiring connection at
circulator motor control leads
Failed circulator blower motor
Failed integrated control
module
Tighten or correct wiring connection
Check circulator blower motor,
replace if necessary
Check integrated control module,
replace if necessary
No Air Handler operation Eb2
Circulator blower motor
horse power in shared
data set does not match
circulator blower motor
horse power
Incorrect circulator blower
motor in Air Handler
Incorrect shared data set in
integrated control module
Verify circulator blower if motor
horse power is the same specifed for
the specifc Air Handler model,
replace if necessary
Verify shared data set is correct for
the specifc model, re-populate data
using correct Bluetooth® Shared
Data Loader BTSDL01 if required
Air Handler operates at reduced
performance
Airfow delivered is less than
expected
Eb3
Circulator blower motor
is operating in a power,
temperature, or speed
limiting condition
Blocked flters
Restrictive or undersized
ductwork
High ambient temperatures
Check filters for blockage, clean
flters or remove obstruction
Check ductwork for blockage,
remove obstruction and verify all
registers are fully open
Verify ductwork is appropriately sized
for system and resize/replace ass
needed