14 Numbers in [brackets] are for 50 Hz international systems. EAC-SF-13
Service Facts
ifD™ DISPLAY FAULT LED CODES
COMFORT
CONTROL ERROR
CODE
FAULT DESCRIPTION YEL-1 YEL-2 YEL-3 YEL-4 RED-1 RED-2 RED-3
AIR-CLEANER
COM LED
SERVICE PROCEDURE
18
Internal control lockout
ON ON ON ON OFF OFF Device Count
Repower Air Cleaner - check for normal
operation. Replace door if same fault comes
37
Duplicate Filter, Another filter
timer is present/ Only seen
when Air Cleaner is configured
in the communication mode
and the Comfort Control filter
times are not set to "E" auto-
discover on set-up 500 and
501.
Not
reported to
air-cleaner
user
interface
Not reported
to air-
cleaner user
interface
Not
reported to
air-cleaner
user
interface
Not
reported to
air-cleaner
user
interface
Not
reported to
air-cleaner
user
interface
Not
reported to
air-cleaner
user
interface
Device Count
User set-ups 500 and 501 will need to be
changed back to "E" to enable the comfort
control to auto-discover the filter cleaning
timer set-up in the air-cleaner.
64
One or more buttons are stuck
in the ON position on the air-
cleaner door.
ON ON ON ON ON OFF Device Count
Check to see if buttons operate smoothly and
are not obstructed. If unable to free button
replace air-cleaner door
91 Communication Fault ON OFF ON OFF OFF ON Device Count
Air-cleaner can not generate a ERROR
CODE 91 on the comfort control, fault is with
other unit.
No ERR Code Communication Fault ON OFF ON OFF OFF ON Fast Flash
Active communicating fault. Check for 12-13
voltage DC between Brown and Blue wires at
the air-cleaner connection plug.
No ERR Code
Communication Fault
ON OFF ON OFF OFF ON Device Count
Like the furnace and air-handler's users
interfaces the air-cleaner stores fault codes.
Check air-cleaner COM LED for device count
(one blink for each communicating device on
the COM BUS) If device count is present
ensure air-cleaner green LED #1 blinks slow
with indoor blower operation. Clear fault log
107 Repetitive Arcing ON ON ON OFF OFF OFF Device Count
Clean Collection Cells and Field Charger - If
they are clean, check for arcing through the
plastic frame.
108
HV off when it should be on /
This can be caused by a
grounded field charger or
shorted cells which causes an
air-cleaner shuts down before
the power output reaches 5
KV.
ON OFF OFF ON OFF OFF Device Count
Check for arcing through the Collection Cells
and Field Charger cases. Check door
operation by referring to Testing the Power
Door on page 17 of the air-cleaner's Service
Facts
108
HV too LOW
ON OFF OFF ON ON OFF Device Count
Remove power door and recheck high
voltage-if still low replace power door, If
voltage is correct, check cells and Field
Charger.
108 HV too HIGH ON OFF OFF ON ON ON Device Count
Check for arcing through the Collection Cells
and Field Charger cases. Check door
operation by referring to Testing the Power
Door on page 17 of the air-cleaner's Service
Facts
109
Input Current too LOW
ON ON OFF ON ON OFF Device Count
Check Collection Cells and Field Charger
connector pins.
109 Input Current too HIGH ON ON OFF ON ON ON Device Count
Clean Collection Cells and Field Charger.
Check for arcing through the Collection Cells
and Field Charger cases.
125
Input A/C Voltage too LOW
OFF OFF OFF ON OFF OFF
Check 24 volt supply to the air-cleaner. The
supply voltage should not drop below 22 volts
under full load. Ensure Transformer is rated
for at least 50VA for furnaces and 75 for air-
handlers. If two or more air-cleaners are
connected on a system, ensure the
transformer ratting is increased 25 VA for
each additional air-cleaner
Ex 1 Ex. 2 Ex. 3
8
To clear all three faults codes from the control’s memory, press
and hold the RESET button for 2-4 seconds when the fault
codes are displayed. When the fault memory is cleared, the
Yellow and Red LEDs will go out for all three fault locations. The
Green LED or LEDs will remain on to mark the fault number,
first, second or third fault.
G1
G2
G3
Y3
Y4
R1
R2
R3
Y2
CLEAN
DIRTY
G1
G2
G3
Y3
Y4
R1
R2
R3
Y2
CLEAN
DIRTY
Y1
G1
G2
G3
R1
R2
R3
CLEAN
DIRTY
Y1
Y4
Y3
Y2
Y1
Examples: see Fig. 8
Ex. #1: The most recent fault condition was a High Voltage “HV
was Low”
Ex. #2: The second fault condition was “Internal Control Lock-
out”
Ex. #3: The third fault condition was “Input Current too High”
NOTE: If more that one whole house air cleaner is
installed, each unit will retain its own fault codes.
WARNING
!
High Voltage is present within the Air Cleaner for operation.
Before removing the Power Door, turn the power off and wait
at least 15 seconds to allow voltage to discharge. Failure to
disconnect power before servicing could result in death or
serious injury.
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