64
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 >
Notifications
Component or System Operational State and Troubleshooting Tip
How to clear alert code
124
Service
Urgent
Tstat Lost
Communication
To Smarthub
The thermostat has lost communication with a system component for more than three minutes.
System component has lost communication with the thermostat.
• Check the wiring connections between components.
• Ohm wires.
• Cycle power.
• Any component that is miss-wired may cause a false component code to be shown on system
component.
• Disconnect all wiring to other system components and check communication one at a time.
NOTE:
When using a float switch, use isolation relay to break common wire to outdoor unit. For
testing purposes, remove float switch from the circuit
This alert code stops all associated system operations and waits for a heartbeat message from
the system component that is not communicating.
Automatically clears after
communication is re-established
with applicable system component
(device).
125
Service
Urgent
Control
Hardware
Problem
There is a hardware problem on a system component control. There is a control hardware
problem.
• In system using iHarmony zoning, the system will remain in non-zone mode (all dampers open)
for five minutes after priority condition no longer exist.
•
In systems using a Equipment Interface Module, remove jumper if present on indoor unit
between
R
and
W2
.
• In systems using a PureAir
S
, the pure air control board jumper selector is missing.
If none of the above tips are applicable, then replace the control if the problem prevents operation
and is persistent.
Automatically clears five minutes
after the issue no longer exists.
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.
• Install the missing jumper.
• Set as heat pump, furnace control or air handler control.
NOTE:
This is applicable in non-communicating applications only.
Automatically clears after the missing
or incorrectly installed jumper is
installed or corrected.
