43
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
548
Service Soon
ZS Humidity
Sensor Error
Without humidifiers or dehumidifiers, sensor reads out of range 0% to 100%. This message
indicates humidity sensor has malfunctioned.
Zone sensor will have to be replaced or if
sensor auto corrects itself the alert will be
automatically cleared and system will return
to normal operations.
551
Service Soon
ZS Zone
Sensor Lost
Communication
Any lost communication between any zone sensor and the damper control module will result in
applicable alert code(s) being displayed (543, 544 or 545) at the thermostat.
• A pop-up display on the thermostat will appear indicating a communication error.
•
Indoor temperature for the specific zone in error will displayed as “--” on the home screen.
• When any zone sensor loses communication with the damper control module, the entire system
will go into central mode (single temperature control).
Check for loose, damage or incorrect wiring between damper control module and the zone sensor
reporting alert code 551.
Once communication is reestablished the
zone sensor will return to normal zone
operations.
600
Information
Only-Dealer
Load Shed
Event
Compressor has been cycled OFF on utility load shedding.
• Load shedding function provides a method for a local utility company to limit the maximum power
level usage of the outdoor unit.
•
The feature is activated by applying 24VAC power across the
L
and
C
terminals on the outdoor
control
Automatically clears when L terminal is
inactive.
601
Information
Only-Dealer
OD Unit Low
Ambient
Operational
Lockout
• Outdoor unit has been cycled off on low temperature protection.
• Outdoor unit will not operate when the outdoor ambient is at or below 4°F (-15.6°C).
• If the unit is satisfying a demand (running) and the outdoor ambient drops below 4°F (-15.6°C),
the unit will continue to operate until the demand has been satisfied or the outdoor ambient drops
to 15°F (-9.4°C) which will result in the unit being locked out (shut down).
Automatically clears when low temperature
condition no longer exists.
610
Service
Urgent
Low Room
Temperature
Detected
This alert will automatically notified the user that a low room temperature condition exist. A notifi
-
cation is displayed on the HD display and email notification sent to homeowner and dealer.
The freeze alert protection parameter range is 30°F to 50°F (-1.11 to 10.0°C). Default is 40°F
(4.44°C).
NOTE:
Notification is dependent on the thermostat having a active Wi-Fi connection and the user
account has been setup and includes a valid email address.
Automatically clears when condition is
resolved.
611
Service
Urgent
High Room
Temperature
Detected
This alert will automatically notified the user that a high room temperature condition exist. A
notification is displayed on the HD display and email notification sent to homeowner and dealer.
The heat alert protection parameter range is 80°F to 100°F (26.67 to 37.78°C). Default is 90°F
(32.22°C).
NOTE:
Notification is dependent on the thermostat having a active Wi-Fi connection and the user
account has been setup and includes a valid email address.
Automatically clears when condition is
resolved.
