Sanyo mini split won’t turn on
hoho223
10 months ago
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BobH
10 months agohoho223
10 months agoRelated Discussions
Do mini split systems come cooling only
Comments (2)Yes, they can be had in cooling-only. I think that the heat pumps are a little more expensive than cooling only, but not much. I can not comment on the relative efficiency. The heat pumps are mechanically more complex so they have more failure modes. I have three multi outdoor units for my seven room house. The reversal valve crapped out on one of mine just before the one-year warranty date. (Note to you AC guys, it stuck in heat mode and would reverse if I tapped on the valve with the butt end of a screwdriver.) I do not think that is a big consideration, but you might want to discuss that. What is the advantage of heat pumps to you? Maybe a lot and maybe none. Do you heat with oil, gas or propane? You can compare your heating costs with your current fuel and electricity rates and decide if you want to heat with heat pumps in relatively mild, but cool, weather. There is a cut-off temp where they fail to perform well when it gets colder. You can zone your heat when you are using them, adding more economy, heating only the rooms are sitting in to comfortable temp and leaving your main t-stat set lower. (This gets a little complicated if the t-stat is in a room that you are heating with the mini split.) Tip: when heating with high wall or ceiling units, you will probably want to turn up the blower manually higher than its programmed speed to keep the heat near the floor and not accumulate near the ceiling. On the other hand, your ceiling paddle fan will take care of this as well if you have them. One thing you might want to keep in mind. I can say that the Mitsu (and perhaps all brand) multi are less efficient than the 1:1 units and they do not do as well as the single units with heating at low temperatures. For the former, I think it stems from the fact that the compressors only throttle back to a certain percentage of max. For example, a single unit might be rated at 9000 BTU. If you only need a little cooling, and assume that they throttle back to 10%, you can efficiently get 900 btu out of them running constantly with no on/off. Your tri unit is probably 22,000 btu and can throttle back to 2200 btu with the same assumption so your compressor will be flicking on and off more often which yields poorer humidity control and not as even cooling. Please, keep in mind the relative nature of my comments. These things all work really well compared to window units and compared to central forced air. Be sure to consider all of your alternatives for the installation. In addition to wall-hung, you can have floor mounted, short ducts to hidden units and ceiling-mounted. That all costs more though. You have probably seen the pictures of installations with the plumbing straight through the walls to the outside of the house. Mine are run inside the walls to underneath the house. Again it might cost you a little more, but talk about it with your contractor. You should look at the MItsubishi, Sanyo, Toshiba and perhaps, other web sites to get some more information about their equipment alternatives. Your contractor should be willing to discuss all of this at length with you since you are making a big investment. I hope they can evaluate your cut off point for economical heating with the heat pumps vs. your hydronic heat. They should be able to estimate for cooling only vs heat pumps. The price difference might be trivial, however....See Moreductless mini split unit
Comments (10)There was an episode of Ask This Old House a week or so ago where they installed a minisplit for a customer. It was a single-car garage that the customer wanted to use as a home office (it was insulated). I thought the installation was pretty simple: 1. Locate and put a mounting bracket on the inside wall for the inside unit using a couple of screws. 2. drill/cut a 3" hole through the wall and place a sleeve (supplied) inside. 3. Set the inside unit up on the wall. 4. Locate and place the outside unit on a pad (purchased) outside. 5. install the bottom half of a plastic channel (purchased) to hold the wiring and lineset to the side of the house. 6. run and connect the 4-wire electrical line between the two units (purchased). 7. run the power line from the outside unit to the main power panel. 8. run the lineset from the outside unit to the inside unit. Surround the lineset with (purchased) insulation. Snap the top part of the plastic channel in place over the lineset and wiring. 9. Connect the lineset at both ends using the proper flare fittings (supplied). connect a vacuum pump to the service port on the outside unit, pump down and check for / repair any leaks. (You'd need a pro to do this.) Connect the main power line. open the inlet/outlet valves for the refridgerant on the outside unit. (refridgerant is already supplied with the unit.) Turn it on and cool down. Enjoy a frosty beverage of choice. This looks a bit more complicated than it is. But if you're a DIY person, you can do a lot of it yourself. Then an AC guy can come and take care of the lineset and powerpanel stuff....See MoreDuctless Mini-split air conditioning
Comments (49)Hello, Would like to know how many BTUs (for 1 wallmount system)would I need for two floors of 690 sqfeet (each floor). The Unit will be on the 2nd floor in the middle between 2 bedrooms and a washroom (over washroom door facing master bedroom). It will be a dual split system. ------------------------------------- Also would like to know which is a safe reliable cost efficient brand, example of wall mounted (split systems) air conditions I've heard of: Fujitsu (they give 10 years warranty parts and labour) Mitsubishi (6 yrs parts and labour however been making them longer) Daikin (6 yrs parts and labour) Igloo York Carrier Grey All about the same price... ----------------------------------- Finally, is it better to get a dual system (with heat pump), from my understanding they are almost the same price and the advantage is that it has a variable BTU which may save some $$. Since the heat pump will be at the higher level then it wont heat as much however it is coming at about the same price. Then again more electronics in a system more chances of malfunctioning sooner? Thank you, Stelios...See MoreLocation of indoor mini split unit - exterior or interior wall?
Comments (5)"I need to put a dual head unit in my basement in two interior rooms. Mitsubishi advertises that I can run the drainage UP to the plenum space and angle it two rooms away to the ouside wall. The manuals for their minisplit, ymg sanyo and klimaire says not to do it. How may I use a pump to accomplish this. The floor is concrete. Also closest drainage is a bathroom. Can I drain them there?" All you need is a small condensate pump and you can run the lines nearly anywhere. The small pumps have a tank to collect the condensate, a level switch to determine when to turn on the pump, and a pump. The line can often be as small as 1/2 inch flexible plastic tubing. It can run into just about any drain, but it requires an 'indirect waste.' That means the tube ends above the flood level of the drain or sink. A nearby laundry sink is a good option....See MoreBobH
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10 months agohoho223
10 months agoCharles Ross Homes
10 months agolast modified: 10 months agoAustin Air Companie
10 months agoCharles Ross Homes
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