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 |
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| communicating mode, not in startup. Exit from Com- |
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| missioning and Execute ’Set Factory Default mode’. |
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| Control will still operate on default parameter set- |
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| tings. |
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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. |
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| Replace sensor pack if necessary. At beginning of |
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| (any) configuration, furnace or air handler control |
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| will sense outdoor air and discharge air temperature |
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| sensor(s). If detected (reading in range), appropri- |
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| ate feature will be set as ’installed’ and that could |
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| be seen in ’About’ screen. In normal operation after |
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| control recognizes sensors, alarm will be sent if |
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| valid temperature reading is lost. To get rid of set- |
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| ting and alarm, redo configuration and make sure |
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| that temperature sensor is marked as ’not installed’ |
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| in Indoor Unit ’About’ screen. When Indoor unit con- |
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| trol is replaced, thermostat will ’tell’ new control if |
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| temperature sensor is in system or not. Clears 30 |
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| seconds after fault recovered. |
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E 200 | Hard lockout − Rollout circuit open or previously open. | Correct cause of rollout trip, or replace flame rollout |
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| switch. Test furnace operation. Cleared after fault |
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| recovered. |
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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 |
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| motor. Possible causes: motor not powered, loose |
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| wiring. Problem may be on control or motor side. |
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| Cleared after fault recovered. |
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E 202 | Indoor blower motor mis−match − Indoor motor horsepower does not | Incorrect appliance capacity code selected. Check |
| match unit capacity. See Page 67. | for proper configuring under: Unit Size Codes for |
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| Furnace/Air Handler on configuration guide or in |
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| installation instructions. Cleared after the correct |
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| match is detected following a reset. (Remove ther- |
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| mostat from system while applying power and re- |
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| programming.) |
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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 67. | proper configuring under: Unit Size Codes for Fur- |
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| nace on configuration guide or in installation instruc- |
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| tions. Critical Alert. Cleared after valid unit code is |
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| read following a reset. (Remove thermostat from |
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| system while applying power and reprogramming.) |
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E 204 | Gas valve mis−wired. | Check gas valve operation and wiring. Clears when |
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| repaired. |
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E 205 | Gas valve control relay contact shorted. | Check wiring on control and gas valve. If wiring is |
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| correct, replace control. |
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E 206 | Gas valve second−stage relay failure | Furnace will operate on 1st stage for remainder of |
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| the heating demand. Will clear after fault recovered. |
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| If unable to operate 2nd stage, replace control. |
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E 207 | Hot surface ignitor sensed open − Refer to troubleshooting. See Page 68. | Measure resistance of hot surface ignitor. Replace if |
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| open or not within specified range found in IOM. |
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| Resumes normal operation after fault is cleared. |
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