Heater coolant shut-off valve n279. Technical 2019-05-07
Four Seasons Manual Shut
One simple accessory can make your long-distance more comfortable than you ever knew possible: Four Seasons manual shut-off valve! Attention is therefore to be paid to the correct version, encoding and adaption of the auxiliary heater. . The tank warning is active. Display zone 3 Current power factor for the circulation pump -V55 J Readout: 0 percent - The circulation pump is not activated. Display zone 4 Activation of the combustion air blower -V6 in percent J Readout: 0 percent - The combustion air blower is not activated.
Heater Install and Supply Water Shut Off Valves
And the worst thing that could happen is that there won't be any warm air flowing in your car's interior. Now your heater valve is what allows you to control the amount of heat that enters the passenger compartment. In this case, actuation is in response to a request from the operating and display unit, Climatronic control unit -J255- via the data bus. J Readout: 0 percent - The shut-off valve is permanently activated small coolant circuit; the coolant is drawn in by the auxiliary heater directly from the air conditioner unit heat exchangers. This shut-off function must be preset by way of the Adaption function.
Audi Workshop Manuals > A5 > Heating, ventilation, air conditioning system > Auxiliary heater > Aux. heater/heater booster > Functional description of auxiliary heater > Actuation of heater coolant shut
Now, when this valve gets damaged, the flow of hot air may cease. These instructions are written with a Nissan Sentra in mind. I've seen cars with a valve on a heater hose to prevent hot water getting to the core. I was planning on putting it on the pump so it's out of the way for the most part. All the coolant drawn in by the circulation pump -V55- comes from the front air conditioner heat exchanger. To reduce the noise level, use is made of a rubber grommet for attachment with the studs and nuts -D-. Note t If necessary, carefully detach the scuttle panel trim from the fastener at the cross-member of the windscreen -C-.
Troubleshooting A/C Heater Control Valve
View of Norm's clamps I used the clamps to clamp the heater hose in the engine bay so I could cut the hose and add the valve without the coolant leaking. The flow must be maintained so simple isolation valves are not the way to go as you would need a bypass. On this vehicle, a display of 100 % for example currently indicates that 100 % of the coolant is being conveyed in the small circuit and that the heater coolant shut-off valve -N279- is being actuated. It's only there to keep the interior of the car from getting too hot in Summer. A cable operated heater control valve uses a Bowden cable to drive a flap located inside the valve.
Audi Workshop Manuals > A5 > Heating, ventilation, air conditioning system > Auxiliary heater > Aux. heater/heater booster > Incorporation of auxiliary heater into coolant circuit > Removing and installing heater coolant shut
I will install a T into each line to run to the heater unit which will be located at the foot of the mid cabin. Then I won't need to remove anything. The design of the heater valve does not totally shut off the hot coolant to the heater core when the heater knob is in the full off position on 1971 model car. Step 2: Place the drain pan directly under the radiator, at the front passenger's side of your vehicle. During the control interval, the heater coolant shut-off valve -N279- is not actuated and the coolant flows in the large coolant circuit via the engine. It may be located on the inlet or the outlet port of the heater core, and activated by a cable, electronic control or a vacuum signal. Teflon tape was used to seal the threads.
Audi Workshop Manuals > A5 > Heating, ventilation, air conditioning system > Auxiliary heater > Aux. heater/heater booster > Functional description of auxiliary heater > Actuation of heater coolant shut
In auxiliary heating mode the recirculation pump -V55 is switched on at maximum delivery. Display zone 4 Signal to activate the fresh air blower -V2 J Readout: off - No request is sent to switch on the fresh air blower on the convenience system data bus J Readout: on - The request to switch on the fresh air blower is sent on the convenience system data bus - The front operating and display unit -J255 switches the fresh air blower -V2 on Measured value block 005 Display zone 1 Signal from flame monitor fitted in glow plug -Q8 J Readout: Detected - The electrical resistance in the glow plug corresponds to a value which is set in burn mode. Your car's heater core is responsible for keeping the interior of your vehicle warm, which is something that is crucial during winter. It sits between the water pump heater hose and the heater core. I solved the problem by barrowing two clamps from my neighbor that is like Norm's brother. The coolant temperature increases or remains constant and the proportion of the coolant drawn in by the circulation pump -V55- which flows back via the engine to the auxiliary heater is regulated by the supplementary heater control unit -J364-. So, would be nice to have shut off valves on the feed and return lines at the engine, for easy winterization.
Audi Workshop Manuals > A5 > Heating, ventilation, air conditioning system > Auxiliary heater > Aux. heater/heater booster > Functional description of auxiliary heater > Actuation of heater coolant shut
The tank warning is active. Heater Control Valve The heater core is the heart of the heating system. If you need isolation, remove the supply and return hoses from the engine and install a short jumper hose until you resolve the cabin issues. The control unit -J364 does not switch the recirculation pump -V55 on if a request is received over the data bus system. The heater control valve is found in front of the firewall of the vehicle. Four Seasons manual shut-offs have a leak-free design to hold back the flow of hot water from the heater core, enabling much cooler air to reach your cabin. This type of system uses a blend door to mix cooled and heated air to achieve a desired temperature.
Heater Valve
Hey Guys, I am going to install a Heatercraft heater into my Sig 240. See, you could get frostbites without the warmth provided by the heater. Installing Install in reverse order; paying attention to the following: — Butt-joint the coolant hoses. Step 8: Refill the coolant system with clean coolant or reuse the coolant in your drain pan if it's still clean. I would loop the flow through both the heater and water heater. The engine was switched off; no more additional heating power is required to attain the preset interior temperature etc.
Audi Workshop Manuals > A5 > Heating, ventilation, air conditioning system > Auxiliary heater > Aux. heater/heater booster > Functional description of auxiliary heater > Actuation of heater coolant shut
Display zone 2 Current power factor for the metering pump -V54 J Readout: 0 percent - The metering pump is not activated. This is in case of malfunction, heat may still be provided to the occupants by the heating system. I installed one of these in my blazer after install of an aqua hot heater. So if it flows from the top of the engine and then down, I have to put the valve on the intake side then, right? Air passing through the heater core creates hot air in your vents. Does this affect how the car runs at all? Then I won't need to remove anything.
Troubleshooting A/C Heater Control Valve
Step 4: You will find two hose clamps on the heater hoses at both sides of the heater valve. It in no way affects performance, but you may lose a little cooling capacity. We recommend checking for leaks around the valve and tightening the clamps as necessary. The 1971 Pantera has the heater tubes located higher on the firewall than the later cars so I had to mount the valve higher on the hose than it would be on the later cars. If there's a damaged part, replacement must be done immediately. This may cause the heater to stop working. Step 10: Close the radiator cap and shut off your engine.