15
Table 2. 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 >
Notifications
Component or System Operational State and Troubleshooting Tip
How to clear alert code
126
Service
Urgent
Control Internal
Communication
Prob
There is an internal hardware problem on the system component control. In addition, if you have
zoning the alert code is triggered when your zone temperature is deviating away from set point
persistently.
• Typically the system component control will reset itself.
• Replace the system component (device) control if the problem prevents operation and is
persistent.
Automatically clears 300 seconds after the
issue no longer exists.
130
Service
Urgent
Configuration
Jumper Missing
•
Configuration jumper missing on equipment interface module (EIM).
•
Configuration jumper missing on air handler communicating control board 1
• Install the missing jumper.
•
Set as heat pump, furnace control or air handler control for EIM.
NOTE:
This is applicable in non-communicating applications only.
Automatically clears after the missing or
incorrectly installed jumper is installed or
corrected.
132
Service
Urgent
Device Control
Software Fault
System component control software is corrupted.
• Recycle power.
• If failure re-occurs, replace the system component control.
Manual system power reset is required to
recover from this alert code.
180
Service Soon
Outdoor
Temperature
Sensor Problem
The thermostat has found a problem with the outdoor sensor in the outdoor unit or the optional
outdoor sensor connected to the indoor unit. In normal operation after system component control
recognizes sensors, the alert code will be sent if valid temperature reading is lost.
• Compare outdoor sensor resistance to temperature / resistance charts in unit installation
instructions.
•
Replace sensor pack or stand alone outdoor sensor.
•
At the beginning of (any) configuration, furnace, air-handler control or equipment interface
module will detect the presence of the sensor(s).
• If detected (reading in range), appropriate feature will be set as ‘installed’ and shown in the
‘About’ screen.
Automatically clears upon configuration, or
sensing normal values.
181
Service Soon
OD Suction
Pressure
Transducer
Fault
•
Suction Pressure Transducer reading above 4.75V or below 0.25V for 24hrs +/- 3hrs. Run on
staged operation.
Resets after 3 consecutive readings that are
in range
182
Service Soon
OD Suction
Temperature
Sensor Fault
•
Reading below 0.25V or above 4.75V for 24hrs +/- 3hrs. System will continue to operate normally.
Resets after 3 consecutive readings that are
in range
183
Service Soon
OD Liquid
Pressure Sensor
Fault
•
Under 0.25V and above 4.75V readings for 24 hours +/-3hrs or more on the sensor will cause
this error.
•
Continue normal operation, see sections related to low pressure switch emulation for specific
details related to low pressure switch faults.
Resets after 3 consecutive readings that are
in range
184
Service Soon
OD LIquid
Temperature
Sensor Fault
• Sensor shorted or open for 24 hours +/-3hrs or more.
• Continue normal operation.
Resets after 3 consecutive readings that are
in range
