Tip & How-To about Heating & Cooling

Heater controls

I hear about alot of problems that people have with heaters. Some may be electric and some gas. I am going to give up a few ideas that were given to me that may help with maintenance and longjevity of your heaters.

First, Electric heaters. Just like in your home when you set the thermostats down a few degrees to save energy, you should turn the thermostat down on the electric heaters(the dial). The heater can be adjusted down just below the maximum output of the heater to protect the heater. The weakest link in the heater is a fusable link that is attached to the ends of the heating elements. By turning it down some, you give it a capacity for more power in the event of an overcurrent situation. If it is maxed out and there is a power surge, it may burn the link. Usually this means replacement. Small heaters are inexpensive enough that it may be cheaper to replace the heater than repair it unless you repair it yourself.

Seconly, Gas heaters. There isnt alot that you can do with them except clean the burner assemblies yearly and at the end of the season, wrap them in plastic and put them back in the box that it came in. This will help keep critters out and prevent spiders from building webs where they shouldnt. Alot of early service calls i get are for that purpose. Cleaning spider webs out of burner assemblies that have sat all summer. Good luck to all, If you take care of your heaters, they will take care of you.

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2 Answers

Display says "CFH" but heatert wont fire up. Just makes a clicking sound


You don't have gas supplied to the heater. It sounds like you have a gas powered unit and the clicking you're hearing is the sparker sparking.

Jun 07, 2015 | Pool & Spa

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My model 400 series Kenmore gas dryer has a heating issue. At first start I can hear the gas heater ignite and heat the dryer. After the dryer has ran for a few minutes the burner shuts off and fails to come on again during the remainder of the drying cycle. I have checked all electrical connections and are OK. Is this a Limit Switch problem or a Gas Solenoid. This dryer is approximately 5 years old and has performed flawlessly. I am capable of performing these repairs. Please help if you can.


Hi, If you are having problems with your gas dryer not heatingthe most common problem is that the ignitor goes bad. Even though it glowssometimes it is still not working properly. if you dryer is gas check out this gas no heat tip.... If you have an electric dryer, you can have many differentthings that can go wrong causing the dryer not to heat. check outthis electric no heat tip...

heatman101';
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Jul 05, 2011 | Kenmore Dryers

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I am having problems with turning my gas heater ( Rinnai Convector 404) on and also a high pitched ringing sound, we were given the heater a cpl weeks ago and managed to use it no probs for a few nights but now it lights and shuts off with ringing within seconds? can you assist? thanks


This noise you hear may be a result of a gas pressure problem to the heater. Generally, it's caused by low pressure. Low, meaning below the the standard required by the manufacturer for this heater. The gas regulator on the heater may be stuck in a partially open position or the line that furnishing the gas to the heater is to small in diameter. Also, check the gas line shut off vale, to make sure it's fully open.

Hope this helped you troubleshoot and solve the problem.

Jun 04, 2011 | Heating & Cooling

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is there alot of problems with bosch aquastar 2400


Bosch has had problems with these heaters for sure. They are the best known thing out there in the market.They are mostly responsible for the bad rap being given to all tankless heaters, but a big part of the problem is installation. They are being sold to homeowners at box stores as DIY kits. These are not units to be homeowner installed, venting and fuel requirements are different from regular heaters and they will not function correctly if improperly installed. I have installed several of the Rannai units over the past few years without any issue whatsoever.

Mar 10, 2009 | Bosch AquaStar Indoor Natural Gas Tankless...

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