Fault Code Lookup

HVAC Sales Master
24
Sensor Failure — Ambient Temperature
This code typically points to
  • Failed ambient temperature sensor
  • Open or shorted sensor wiring

Next checks to confirm
  1. Ohm sensor against spec
  2. Inspect sensor harness

Escalation
Failed sensor; replace.
Reset behavior
Self-clears when sensor reads correctly.
Service Soon
Schedule repair
Source
iQ Drive Table 7