Fan Only Mode; Cooling Mode - Heat Controller SMA Service Manual

9.5 Fan only mode

Fan speed is high/mid/low/ Auto

9.6 Cooling mode

The 4-way valve is closed at cooling mode.
The action of the compressor and the outdoor fan:(T=indoor temperature)
Auto fan at cooling mode:
Anti-freezing control to indoor evaporator at cooling mode ( T: evaporator temp. )
Condenser high temperature protection (only for heat pump)
Service manual
1.8º F
1.8ºF 7.2ºF
Heat Controller, Inc. Jackson, MI 49203
- 33 -
9ºF