How does the air conditioner work in a Volvo 850?
The heater (blower motor) fan is controlled by ECC output (power) stage. Air conditioning system will only operate above 32 F (0 C). Blower switch must not be in zero position to allow compressor to engage. interior temperature sensors, and duct temperature sensors.
Where is the a / C heater on a Volvo?
Doors are controlled by cables on left side and center of climate control unit. Fresh/recirculated air is selected by switch to lower right of mode knob on A/C-heater control panel. Door is controlled by recirculation motor on upper half of climate control unit. Air conditioning system will only operate above 32 F (0 C).
When to turn on the ECC in a Volvo 850?
The ECC control module normally supplies voltage to A/C relay, except when heater (blower motor) fan is off and vehicle speed is less than 20 MPH, when heater fan is off and recirculation is on, or momentarily when under full acceleration.
What’s the low pressure switch on a Volvo 850?
The high- pressure and safety switch cut power to the A/C compressor if pressure in the A/C high-pressure circuit becomes excessive, supplying a signal to ECM to start cooling fan. The low-pressure switch (pressostat) turns A/C compressor on and off to maintain pressure within limits. floor/defroster damper motor.
How does the a / C compressor work on a Volvo?
Courtesy of Volvo Cars of North America. The A/C compressor electromagnetic clutch is powered by the A/C relay. Compressor operation requires that the A/C relay be activated by both Electronic Climate Control (ECC) module and Engine Control Module (ECM).
What kind of car is a Volvo 850?
1995 Volvo 850 1993-96 MAINTENANCE Volvo Maintenance Information 1993-96 850 Sedan 1994-96 850 Turbo Sedan 1995-96 850 T-5R Turbo Sedan 1994-96 850 Wagon 1994-96 850 Sportswagon 1995-96 850 T-5R Turbo Sportswagon * PLEASE READ THIS FIRST *
What kind of maintenance does a Volvo 850 need?
1993-96 MAINTENANCE Volvo Maintenance Information 1993-96 850 Sedan 1994-96 850 Turbo Sedan 1995-96 850 T-5R Turbo Sedan 1994-96 850 Wagon 1994-96 850 Sportswagon 1995-96 850 T-5R Turbo Sportswagon * PLEASE READ THIS FIRST *
When do I Turn Off the blower on my Volvo?
The last 2 days about an hour after I arrive home from a 40 min back road commute, I’ve noticed that the blower on my 2000 Volvo S80 (heater/AC) fan is running. When I put the key in and move it to the first position and then off, it turns the blower off.