Install Instructions

78
Table 19. Alert Codes and Troubleshooting
GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat
Alert
Code
Inverter
Flash
Code
Priority
Condition
Actual Displayed
Alert Text
Under dealer
control center >
Notications
Component or System Operational State and Troubleshooting Tip How to clear alert code
414 Service Soon
OD High
Discharge Line
Temperature
The discharge line temperature is higher than the recommended upper limit of 279ºF.
• Discharge line temperature is greater than 279ºF.
• Make sure coil is clean and airow unobstructed in and out of condenser.
• Check system operating pressures and compare to unit charging charts in installation manual.
Automatically clears after discharge
temperature is less than 225ºF.
415
Service
Urgent
OD High
Discharge Line
Temp Strikes
Lockout
The discharge line temperature has been consistently higher than the recommended upper limit of
279ºF.
• Discharge line high temperature error count reached ve strikes during a single demand.
• Make sure coil is clean and airow unobstructed in and out of condenser.
• Check system charge using superheat and sub cooling temperatures.
• Reset by putting outdoor control in test mode or resetting low voltage power.
Correct issue and cycle power to the
system.
416 Service Soon
OD Coil Sensor
Faulty
The outdoor coil sensor is either open, short-circuited or the temperature is out of sensor range.
• Outdoor unit control will not perform demand or time / temperature defrost operation. (System
will still heat or cool.)
• This fault is detected by allowing the unit to run for 90 seconds before checking sensor
resistance. If the sensor resistance is not within range after 90 seconds, the control will display
a moderate code.
• Advances from moderate to critical after ten (10) minutes.
• Plug-in sensor harness correctly.
• Check resistance of sensor to determine if it is open, shorted, out of temperature calibration or
out of ambient temperature range. Replace if out-of-specications.
Automatically clears when outdoor
unit control detects proper sensor
readings.
If sensor is faulty and the system is
reporting the condition as critical,
replaced sensor. Reset power to
clear alert code.