65
Table 19. Alert Codes and Troubleshooting
Initial notification of critical alerts will pop-up on the home screen and will be listed under notification menu. Minor and moderate alerts are found only under the notification menu. Moderate alerts
are not e-mailed to Homeowners. Dealers will get an email and code can be seen on thermostat under the installer notification section.
NOTE:
Anytime the word
DEVICE
or
DEVICE2
is used in this table, it will be replaced on all alert code notification screens with the actual offending device name, for example, thermostat, heat
pump, etc.).
Alert
Code
Inverter
Flash
Code
Priority
Condition
Applicable
Component
Actual Displayed
Alert Text
Component or System Operational State and Troubleshooting Tip
207
Critical
Furnace
Hot Surface Igniter
(HSI) Sensed
Open
The furnace hot surface igniter is open.
• Measure the resistance of hot surface igniter.
•
Replace the igniter if it is not within the specified range found in furnace installation instruction.
• Automatically clears after the issue is corrected.
223
Critical
Furnace
Low Pressure
Switch Open
The furnace low pressure switch is open.
• Check pressure (inches w.c.) of the low pressure switch closing during a heat call.
• Measure operating pressure (inches w.c.).
•
Inspect vent for blockages and combustion air inducer for correct operation and restriction.
• Check for blocked cold end heater box or condensate drain or drain strainers at outlet of cold end heater box.
• Check for cracked hoses.
•
Check levelness of unit.
NOTE:
Check Service Manual and Service and Application Note
H-13-07
“Condensing Furnace Pressure Switch
Troubleshooting” for additional information.
• Automatically clears after the issue is corrected.
224
Critical
Furnace
Low Pressure
Switch Stuck
Closed
The furnace low pressure switch is stuck closed.
• Check operation of low pressure switch to see if it is stuck closed for longer than 150 seconds during a heat call.
• Measure operating pressure (inches w.c.).
•
Inspect vent for blockage and combustion air inducer for correct operation and restriction.
• Check for moisture in pressure switch.
NOTE:
Check Service Manual and Service and Application Note
H-13-07
“Condensing Furnace Pressure Switch
Troubleshooting” for additional information.
• Automatically clears after the issue is corrected.
225
Moderate
Furnace
High Press. Switch
Failed to Close
The furnace high pressure switch will not close.
• Check pressure (inches w.c.) of high pressure switch closing during a heat call.
• Measure operating pressure (inches w.c.).
•
Inspect vent for blockage and combustion air inducer for correct operation and restriction.
• Check for blocked cold end heater box or condensate drain or drain strainers at outlet of the cold end heater box.
NOTE:
Check Service Manual and Service and Application Note
H-13-07
“Condensing Furnace Pressure Switch
Troubleshooting” for additional information.
• Automatically clears after the issue is corrected.
