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Carrier P374-1100 - Heat Pump Cooling Issues; Simultaneous Heat and Cool

Carrier P374-1100
13 pages
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SYMPTOM: When controlling a residential heat
pump, and asking for cooling, the heat
comes on.
CAUSE: Heat pump is not selected "on" in the
Advanced Setup.
REMEDY: Select heat pump on during Advanced
Setup programming. Consult the Owner's
Manual.
SYMPTOM: When calling for cooling, both
the heat and cool come on.
CAUSE: The Advanced Setup is configured
to control a heat pump, and the hvac
the thermostat is controlling is a
"conventional" (non heat pump)
system.
REMEDY: Consult the Owner's Manual in
the Advanced Setup section to turn
off the heat pump.
P374 1100
C US F(_ _-,,,_,o_,,,,_with FCC Standan_s
USTED _o_ I._o_4E OR OFFICE USE
4Z95
PIN 88-172
Page 12

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