T411 — Thermostat Y2 Input Activated without Y1 Activated

Was bedeutet T411 ?

The thermostat's Y2 input is activated while Y1 is not, causing the unit to run as if both Y1 and Y2 were on.

• Bad thermostat
• Incorrect thermostat wiring

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Check the thermostat wiring for Y1 and Y2.

2. 2

   Inspect the thermostat itself for proper function.

3. 3

   Ensure the thermostat is programmed correctly for the system.

4. 4

   Reset the unit after verifying wiring and thermostat settings.