Heating system
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Scooby Newbie
Joined: Feb 2018
Posts: 13
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From: Co down
Heating system
I have just bought a 1993 impreza import, the heater inside the car works great but when you turn temperature to cold it doesnt change to cold, any ideas, switch seems fine
Scooby Regular
Joined: Feb 2003
Posts: 7,816
Likes: 823
From: Harpenden
Heater is a full flow item (no valve controlling water) so the hot/cold is controlled by flaps mixing hot and cold air.
Depending upon the model these flaps are electrically controlled (solenoids) or mechanically controlled(wire rods).
Sounds as if the mixer flap may not be working / become disconnected.
Depending upon the model these flaps are electrically controlled (solenoids) or mechanically controlled(wire rods).
Sounds as if the mixer flap may not be working / become disconnected.
Scooby Regular
Joined: Feb 2003
Posts: 7,816
Likes: 823
From: Harpenden
What model impreza is it??
Update: - found on another thread WRX which comes with auto HVAC.
Heaterbox - flaps marked in yellow; some of the solenoids/motors marked in red.
As to fuses it could be a number involved, so best to check them all in both the main fusebox (enginebay) and fuseboard by drivers right knee.
Update: - found on another thread WRX which comes with auto HVAC.
Heaterbox - flaps marked in yellow; some of the solenoids/motors marked in red.
As to fuses it could be a number involved, so best to check them all in both the main fusebox (enginebay) and fuseboard by drivers right knee.
Last edited by Don Clark; Feb 19, 2018 at 11:43 AM.
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