Just leave it on auto at 72. In vehicles that use clutchless compressors they are always engaged when the engine is running. Consequently, the sum of the pressure in the swash plate chamber Pc x 7 cylinders + force of spring 1 to the left of the swash plate + counter force of the drive plate that acts on the left side of the pistons in the seven cylinders is lower than the pressure P1 - P7 that acts on the right side of the seven pistons. Relative humidity inside the car can increase during a recirculated air phase, because the proportion of fresh air is low. But I can still hear the fan. What is the next step in the diagnosis so as to narrow down the issue. How do I go about troubleshooting this issue? Consequently, the lower piston moves to the left and therefore increases the inclination angle of the swash plate.
Counter measures are taken automatically at an early stage, without the need for driver intervention. I have kept the temperature at 70, 72, 80 etc to experiment but these does not have any effect on fan speed. I think this is where i'm probably over analysing. Any help in diagnosing this issue would be appreciated. Give our parts specialists a call at 1-888-280-7799. Always catch fluids in appropriate containers and properly dispose of any fluid waste.
No build up just fine and then this starts! The spring 1 to the left of the swash plate moves the seven pistons to the right and thus reduces the angle of the swash plate. Then it would seem the problem is solved. Activation of the auxiliary fan is also influenced by an excessively high coolant temperature. Table of Contents Climate Control Components Subject Page Control Modules. If you press auto, it is controlling everything on its own. As a result, the high pressure Pd is reduced and the pressure Pc in the swash plate chamber drops to the level of the intake pressure Ps. Usually after a few tests for power supply from the fuses and relays involved with the climate control system, replacement of the control head and processor is the only fix.
Footwell flap Note: Flap motors are wired in series. If the fan does run, then the water pump is most likely the culprit. I still have the original but don't remember the issue with it. There can be a number of problems related to the system not working, but temperature regulation is way off the mark. The sensor is meant to read the cabin air being drawn in by a tiny fan through the slots on the fascia but if clogged the sensor is heated by the surrounding electronics instead and the climate control thinks it is already warm in the cabin.
The pin where the plastic fan is stuck on has a diameter of 2mm. Since water pump failures are common, lack of heater output at higher engine speeds is often a clue to a cooling system problem that must be resolved before the climate control system is suspected. Someone else had a good suggestion of putting the ac on to check fan operation. Protect your eyes, hands and body from fluids, dust and debris while working on your vehicle. When de-energized the electronic control valve opens and the swash plate is almost vertical and not deflected. And while you a near the fridge.
Parts and Locations: Stepper motors: There are ten stepper motors in the system. Resistance as a function of temperature: Temp. When this happens, your interior climate control does not function normally. Erratic fan behaviour is often caused by the sword. Later models will have at least one cabin or pollen filter, and some will have two or more.
Id start with communicating with the ihka, you probably have a boat load of faults when you press auto, the word auto should appear, The recirculation light should switch to auto, and depending on how you set your memory the ac may turn on or off. To promote adequate air flow across the sensing element a small puller type fan is used. A capacitive sensor element is used for early detection of possible dew formation on the windshield or for removing mist that is present on the windshield. Other names for the condensation sensor are Mist, Fogging, and Humidity sensor. Recycle parts, packaging and fluids when possible. The sensor provides early window mist detection, even before the driver can see any. I am disabled Engineer, so when this problem began again.
I gotta go with the others on this one, too. Depending if the system is single, dual zone or four zone like E70, these sensors operate in the same manner and in all cases are located in the middle of the air delivery. Be sure to route the wiring as it was before and confirm all the electrical connectors are properly seated. If so, any recommendations on manufacturer I should use for the part? I had a syrupy beverage spill which gummed up around the low fan button on the drivers side. Look at the hidden menu 7 and see if Ktmp rises steadily to around 96°C from memory assuming this is your 525i.
I have confirmed by feeling the hoses that the two heater control valves are open. The intake pressure Ps is high, the bellow-type gaiter of the control valve is compressed, also causing the valve body to be shifted to the left, closing the valve. It's late for a guy with my issues. I have read the voltages at the 4 terminals and get: 1 - 0v 2 - 8v 3 - 0v 4 - 8v. The sizes of the nuts and bolts we give may be different from what you have, so be prepared with different size sockets and wrenches.
The piston stroke is influenced by a swash plate. Vehicle models change and evolve as they grow older, so the vehicle shown in our illustrations may vary slightly from yours. Rearpassengers freshair flap fig 1. The sum of the pressure in the swash plate chamber Pc x 7 cylinders + force of spring A to the left of the swash plate + counter force of the drive plate that acts on the left side of the pistons in the seven cylinders is higher than the pressure P1 - P7 that acts on the right side of the seven pistons. The electric fan should run. The radio is out and so are the centre vents. Output-controlled compressors without electric control valves are also cut out using a magnetic clutch.