Daikin DR80SN - Page 32

32
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Symptom
LED
Status
Fault Description Corrective Actions
Problem with igniter circuit
Check and correct wiring from integrated control
module to igniter
Improperly connected or shorted
igniter
Poor unit ground
Igniter relay fault on integrated
control module
Check igniter output from control, replace if
necessary
Polarity of 115 volt AC is reversed
Correct polarity, check and correct wiring if
necessary
Poor unit ground Verify proper ground, correct if necessary
Gas valve is not energized when it
should be
Check wiring in gas valve circuit
External Gas Valve Error Replace integrated control board
Gas valve is energized when it
should not be
Check wiring in gas valve circuit
Internal gas valve error Replace integrated control board
Furnace fails to
operate
.
No 115 power to furnace or no 24
volt power to integrated control
module.
Restore high voltage power to furnace and
integrated control module
.
Blown fuse or tripped circuit breaker
Correct condition which caused fuse to open,
replace fuse
Integrated control module is non-
functional
Replace non-functional integrated control
module.
Furnace fails to
operate
E10
Grounding fault
Poor neutral connection
Verify neutral wire connection to furnace &
continuity to ground source
Furnace fails to
operate
E11 Open roll out switch
Check for correct gas pressure Check for correct
burner alignment
Check for and correct burner restriction
Furnace fails to
operate
EEn Ignitor Open
Check for Ignitor wiring.
Replace Damaged Ignitor
Furnace fails to
operate
EEJ Inducer relay Error Replace integrated control board
Twinning feature
not working
EEH TWIN Error
Check for wiring connections.
Replace integrated control board
Furnace fails to
operate
EEE
Internal Faults or IRQ Loss in
Control Board
Replace integrated control board
Furnace fails to
operate and goes
to hard lockout
EbL
Main blower motor is consuming
very little current after heat on
delay, below an expected value
Check for loose motor wiring connections.
Verify the blower motor voltage, amps and proper speed
setting. If blower motor is not operating correctly, replace
the motor.
Furnace fails to
operate and goes
to hard lockout
EbU
Main blower motor is consuming
too much current during inducer
pre-purge, above an expected
value.
Verify wiring connections to and from motor
are not loose.
Verify that line voltage wires to the control
and the main blower motor are not reversed
at the control.
Furnace stops
heating and only
the fan is operating
EAF
Furnace has lost communication
with the R-32 sensor and the
furnace is in mitigation mode.
Verify wire connection to R-32 sensor is no
t loose.
Verify that the R-32 sensor wire is not damaged.
Replace R-32 Sensor.
Furnace stops
heating and only
the fan is operating
EAL
R-32 sensor has detected a
refrigerant leak and furnace is in
mitigation mode.
Investigate the indoor coil for a refrigerant leak.
Furnace will resume normal operation once a
leak is not detected and the 5 minute delay
period is over.
Furnace stops
heating and only
the fan is operating
EAS
R-32 sensor has detected a fault
and the furnace is in mitigation
mode.
Investigate the R-32 sensor.
Replace the R-32 sensor.
Furnace stops
heating and only
the fan is operating
Ear
A2L relay in the furnace control
board has detected a fault and the
furnace is in mitigation mode.
Investigate A2L relay.
Cycle power on the furnace.
Replace integrated control board.
Furnace fails to
operate
EEL
Diagnose and replace shorted igniter as needed
Verify and correct unit ground wiring if needed
Furnace fails to
operate
EEC
None
Integrated control
module LED
display provides no
signal
Furnace fails to
operate
EEA
Furnace fails to
operate
EEb
Furnace may not be paired with R-32 Cooling Unit.
Refer to the R-32 Information Section