Recalls and Service Alerts

Furnaces - Air Conditioners - Heat Pumps

Outdoor Control Random Alarm Code 431

Type: Service Alert
Equipment: Air ConditionerHeat Pump
Recall or Alert Date: 06-05-2014
Serial Number: C-14-02
Brands Affected: Lennox

Description of Problem:

The code may randomly occur on the XP25 when the reversing valve is immediately deenergized when the heat pump is coming out of defrost. (Issue occurs in # 98W64 – Part # 10368601 with software version 1.2 or 1.6).

Alarm Code 431 may also occur on the XC25 or XP25 when 24VAC power is rapidly cycled to the contactor coil or the 24VAC main power.

Affected Products:

XP25 and XC25 with outdoor control 103686-01 (Catalog Number 98W64), software versions 1.2 and 1.6.