Install Instructions

63
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
115
Service
Urgent
Low Secondary
(24VAC) Voltage
24VAC power to a system component control is lower than the required range of 18 to 30VAC.
• Check and correct voltage.
• Check for additional power-robbing system components (devices) connected to system.
• This alert code may require the installation of an additional or larger VA transformer.
• Damper control module will operate in non-zone mode until proper voltage is restored.
Automatically clears when the system
detects the issue no longer exists.
116 Service Soon
ID High
Secondary
(24VAC) Voltage
• Thermostat will display this code when 24VAC power is high (18 to 30VAC).
• Will display Furnace or Air Handler High Secondary (24VAC) voltage.
Check and correct voltage. Check
for proper line voltage (120VAC,
240VAC, etc.) to equipment. Clears
when control senses proper voltage.
117 Service Soon ID Poor Ground
The reporting unit has poor earth grounding.
• Provide proper grounding for the system component (device).
• Check for proper earth ground to the system.
• Reference Corp0123L10 for additional information
Automatically clears 30 seconds after
the issue is corrected.
120 Service Soon
Unresponsive
Device
There is a delay in the system component responding to the system. Typically this alert code does
not cause any operational issues and will clear on its own.
• This alert code is usually caused by a delay in the outdoor unit responding to the thermostat.
• Leaking voltage from strands within the bundle.
> Land only the R wire on the R terminal to load the bundle with 24VAC.
► Typically only the R wire needs to be landed to identify if voltage is leaking.
► If voltage is present checking the other wires is informational only but not needed.
► If voltage is not present checking the other wires one at a time would be needed.
> Check each loose wire in AC mode to C on circuit board.
► Good voltage is .03 -.3VAC leaking voltage is not the issue.
► Acceptable can be up to .7VAC with moderate success.
► Some units have worked with up to 1.2VAC with occasional success.
► Voltage over 1.2VAC needs to be addressed.
Automatically clears after an
unresponsive system component
(device) responds to any inquiry.