Integrated Control Diagnostic Codes (continued)

E 131

Corrupted control parameters (Verify configuration of system). Communi-

Reconfigure the system. Replace control if heating

 

cating only.

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.

 

 

 

E 180

Outdoor air temperature sensor failure. Only shown if shorted or out−of−

Compare outdoor sensor resistance to temperature/

 

range.

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.

 

 

 

E 200

Hard lockout − Rollout circuit open or previously open.

Correct cause of rollout trip, or replace flame rollout

 

 

switch. Test furnace operation. Cleared after fault

 

 

recovered.

 

 

 

E 201

Indoor blower communication failure − Unable to communicate with blow-

Indoor blower communication failure (including pow-

 

er motor.

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.

 

 

 

E 202

Indoor blower motor mis−match − Indoor motor horsepower does not

Incorrect appliance capacity code selected. Check

 

match unit capacity. See Page 55.

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.)

 

 

 

E 203

Appliance capacity / size is NOT programmed. Invalid unit codes refer to

No appliance capacity code selected. Check for

 

configuration flow chart. See Page 55.

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.)

 

 

 

E 204

Gas valve mis−wired.

Check gas valve operation and wiring. Clears when

 

 

repaired.

 

 

 

E 205

Gas valve control relay contact shorted.

Check wiring on control and gas valve. If wiring is

 

 

correct, replace control.

 

 

 

E 206

Gas valve second−stage relay failure

Furnace will operate on 1st stage for remainder of

 

 

the heating demand. Will clear after fault recovered.

 

 

If unable to operate 2nd stage, replace control.

 

 

 

E 207

Hot surface ignitor sensed open − Refer to troubleshooting. See Page 56.

Measure resistance of hot surface ignitor. Replace if

 

 

open or not within specified range found in IOM.

 

 

Resumes normal operation after fault is cleared.

 

 

 

Page 50

Page 49 Page 51
Page 50
Image 50
Lennox International Inc SL280DFV installation instructions Reconfigure the system. Replace control if heating
Page 49 Page 51

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