Lennox SL280DFV Installation Instructions Manual page 50

Integrated Control Diagnostic Codes (continued)
E 131 Corrupted control parameters (Verify configuration of system). Communi-
cating only.
E 180 Outdoor air temperature sensor failure. Only shown if shorted or out−of−
range.
E 200 Hard lockout − Rollout circuit open or previously open.
E 201 Indoor blower communication failure − Unable to communicate with blow-
er motor.
E 202 Indoor blower motor mis−match − Indoor motor horsepower does not
match unit capacity. See Page 55.
E 203 Appliance capacity / size is NOT programmed. Invalid unit codes refer to
configuration flow chart. See Page 55.
E 204 Gas valve mis−wired.
E 205 Gas valve control relay contact shorted.
E 206 Gas valve second−stage relay failure
E 207 Hot surface ignitor sensed open − Refer to troubleshooting. See Page 56. Measure resistance of hot surface ignitor. Replace if
Reconfigure the system. Replace control if heating
or cooling is not available. Only applicable in the
communicating mode, not in startup. Exit from Com-
missioning and Execute 'Set Factory Default mode'.
Control will still operate on default parameter set-
tings.
Compare outdoor sensor resistance to temperature/
resistance charts in unit installation instructions.
Replace sensor pack if necessary. At beginning of
(any) configuration, furnace or air handler control
will sense outdoor air and discharge air temperature
sensor(s). If detected (reading in range), appropri-
ate feature will be set as 'installed' and that could
be seen in 'About' screen. In normal operation after
control recognizes sensors, alarm will be sent if
valid temperature reading is lost. To get rid of set-
ting and alarm, redo configuration and make sure
that temperature sensor is marked as 'not installed'
in Indoor Unit 'About' screen. When Indoor unit con-
trol is replaced, thermostat will 'tell' new control if
temperature sensor is in system or not. Clears 30
seconds after fault recovered.
Correct cause of rollout trip, or replace flame rollout
switch. Test furnace operation. Cleared after fault
recovered.
Indoor blower communication failure (including pow-
er outage). Lost communication with indoor blower
motor. Possible causes: motor not powered, loose
wiring. Problem may be on control or motor side.
Cleared after fault recovered.
Incorrect appliance capacity code selected. Check
for proper configuring under: Unit Size Codes for
Furnace/Air Handler on configuration guide or in
installation instructions. Cleared after the correct
match is detected following a reset. (Remove ther-
mostat from system while applying power and re-
programming.)
No appliance capacity code selected. Check for
proper configuring under: Unit Size Codes for Fur-
nace on configuration guide or in installation instruc-
tions. Critical Alert. Cleared after valid unit code is
read following a reset. (Remove thermostat from
system while applying power and reprogramming.)
Check gas valve operation and wiring. Clears when
repaired.
Check wiring on control and gas valve. If wiring is
correct, replace control.
Furnace will operate on 1
the heating demand. Will clear after fault recovered.
If unable to operate 2nd stage, replace control.
open or not within specified range found in IOM.
Resumes normal operation after fault is cleared.
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stage for remainder of