Mastercool 67471 Evaporative Cooler Air Conditioner - Answered Questions & Fixed issues

The cellulose pads in a mastercool are glued together and usually the adhesive is what you smell. It may take a while for it to go away. Strange as it may seem, as the pads get more mineralization and you use it more the smell will go away. Do not use a cooler for your whole house without plenty of exhaust through a window or an updux. Coolers work best when there is plenty of freely moving air.

Could probably replace the hose with bits from ur local hardware store.

Hi there,
Try some Downy fabric softener. Or replace them with Aspen pads.Thank you for choosing FixYa.com

check that a hose hasn't come off and touching the fan.

Not an expert just a home owner. There is a separate wire connections for hi and lo you may have something as simple as a lose wire connections. This happened to us.

yes of course you can but if its because your getting to much air you can reduce the fan speed by just replacing the pulley or if it doesnt have a belt drive system it would be cheaper and easier just to install an inverter speed control

simply google or use your computer's search engine for youtube

Hi bud do youself a favour before anything else take the main motor out and send it in to a reputable electrical repair co such as dynamic electrical in Benoni or look up a similar co near you and make sure that your system has not been hit bye lightning or a power surge from the supplier first I do own a Co that specialises in evap coolers and from previous knowledge a lot of the new systems have 12V inverters and if there has been a storm and you havnt diconnected your unit the PCs and motors are more than likely fried

check the fuse in the unit

Cut power from panel for re-set. If problem continues then leak in system or burnt out electical component like contactor.

Posted also on the Cooler quick cycling problem: My Master Stat Controller (CC2000A Rev 2003) was in 2 parts. The Thermostat unit in the house and the Power Control unit in the Cooler. The power Control unit was mounted on the squirrel cage fan housing so it vibrated some when running. That means the components vibrated slightly with respect to the PC board. Especially the larger components. My first symptom - Intermittent failure to turn the water pump on. I could see a faint crack in the solder around the pin of a relay on the PC board. Re soldering the PC pins solved that problem. Later, the second symptom was quicker than usual on-off cycling of the fan. I re-soldered all the pins on the PC board and all problems subsided. A better mounting place for the Power Control Unit would be good, but outside of the cooler might be a thermal problem here in the hot desert south west.

Go manual turn switch, sounds like an overload problem. I have a Mastercool unit and going on 12 years with same motor.

CLEANING PADS My pads are 3 years old. (1) I tried soaking them in Vinegar & water which helped. (2) I then sprayed them with a hose nozzle, that helped also. We live in AZ so the dust storms can be horrendous and I still had build up. (3) So I took a variable speed drill and a wire brush and removed more. (4) Then ,as these filters are made of a wood by product, I took a belt sander ...they look good now. (5) Now when I reinstall them I am going to change the pads so pads facing outside will be facing inside, keeping the 45 degree forward and down. This last step I haven't tried, but it should work.

Turn the power of to both the heater and the cooler. Turn the power back on to the heater and the cooler at the same time then reset codes on controller.

could be the float valve is stuck or has some object blocking it so it cant cut off the water flow..( adjusting the float hight, or cleaning will solve this) or could be the plastic inserts that carry the pads are cracked & allowing water to escape the unit.( replace the pad carrier)..

If your going up on the roof to fix it... you may as well get a onedose cartridge from the hardware shop & put that in the tank whilest your up there...

There is a float in the evaporative cooler that will let water in when the trough is low and then when it fills, should shut the water off. I would check to make sure that the float arm is not corroded or misaligned.

You can try vineger towash it down just pour it in and let it work I would use a gallon. the onlyother thing you can do is chage the media and still wacsh it down with vinegar.. Hope this helps let me know Jon

No! The unit needs air flow across the grills for it to cool properly. But your unit should be shades so an awning over it would help. We use a piece of camoflage netting over ours and it seems to help quite a bit.

http://www.indoorcomfortsupply.com/pdgimages/ducted_premium_manual.pdf
try this and hope it helps.

If the pads are old replace them. Take a panel off and look at the water dist. tubes if plugged, best method to remove it and use compressed air blow from the center, and let it rip, the basket maybe dirty. Good luck