Brivas buffalo 20- the fault light is saying overheat condition. The fan continously runs. The fan is switched to auto so not the problem. Started happening after a power outage. It reached temp and then blows cool air until i go outside to the unit and switch the who unit off. I go later and switchit back on when i need the heating. What to do?

Check fan switch, if in On position fan runs continous Auto position, fan cycles with heat /cool. If in Auto than fan relay,logic board failure or short in wiring.

the fan is not operating properly
if it is a viscous fan hub( fan clutch ) replace it
if electric fans check the relay/s and coolany temperature sensor for correct operation
chweck all wires for continuity and connection faults

My buffalo heater has just started doing the same thing about two hours ago, so will watch for any answers you get. My heater is over ten years old, maybe the heating element has "died"?
PLEASE can someone out there help us????????

First of all, what do you mean by hot air? DO YOU REALLY MEAN ROOM TEMERATURE AIR THAT JUST DOES NOT FEEL COLD? If this is a heat pump system, we need to look at it differently than if it is a gas or oil fired heater. Next, the thermostat control that says "cont.fan auto"----- this actually means FAN switch to be in AUTOMATIC RUN or CONTINUOUS RUN mode. Leave it in auto mode and forget that it is there; this little switch confuses a lot of people. The dial that says 10-30 is centegrade temperature that translates to 50-87 degrees farenheit. In order to get air conditioned (cold) air, you must have thermostat fan switch on auto, the heat/off/cool switch on cool, and the 10-30 dial on 20 or 21 (68-70 f.) assuming the room temp is at least 72 degrees f. or higher. If you still do not get cold air, then there is a problem with the cooling circulation system which can be tripped circuit breaker to outside compressor unit, loss of freon refrigerant, bad control such as relay or reversing valve in outside unit, stuck heat sequencers or heat element relay that are giving you heat at the same time giving cold if it is a heatpump system. You will need a skilled service person to determine these problems. Goodluck, Macgivor

On the unit outside there is a button that says "push man. pull auto" if it is set to push man then the fan will go constantly.

YOU NEED TO BLEED THE SYSTEM AFTER FLUSH.

Cat or other obstruction in fan belt.

u can down load a manual from brivas it has the trouble shooting page in the PDF

Hi,

In my country, most overheating issues on Volkswagen models are resolved by:

• entirely removing the thermostat (not applicable in cold regions);
• wiring the fan to switch on once the engine is running (with or without the A/C or heater being turned on);
• replacing the radiator thermal switch for the fan to a lower temp.

As to the "check engine light", the correct procedure would be to have the engine management computer scanned for fault logs. The error codes would point to the probable area(s) to check/clean/replace.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Hi

The first thing to check is that the engine cooling fan comes on when you turn on the air conditioning, then you should check the condition of the radiator fins. If they are clogged with debris (dead insects, leaves, etc...) then you will need to get a pressure washer onto it through the front grill and try to blast it clear.

When you switch on the aircon, it puts extra stress on the engine, which causes the fuel economy and engine power to drop, and as a result the engine will naturally run hotter, so it needs a bit of help to cool down in the form of the engine cooling fan.

Regards

Geordie