Question about Hardware & Accessories
Do not know how to use a Theben time switch on an electric thermal storage heater. Currently the heater seems to be on constantly and I would like to make it heat just at night.
I have theben timer sul181h. How to set it for lighting automatically at 6p.m. and stopping at 9p.m.?
Posted on Dec 23, 2010
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Posted on Jan 02, 2017
Tips for a great answer:
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The automatic defrost system has 3 parts. 1: Timer. 2: heater. 3: thermal switch
The timer will start the automatic defrost cycle every so many hours. If the timer fails, the defrost cycle will never start. The electrical schematics should be under or on the back of the refrigerator. You can use this to figure out how to test the timer.
The heater is what does the actual defrosting. If it is broken, it will not heat.
The thermal switch turns the heater off when enough ice has been melted. If this switch fails, it will prevent the heater from heating.
The heater and the thermal switch will be wired in series and their connections will be securely covered so you cannot test them independently. You can electrically test then together but you cannot decide which one is broken unless you expose or cut a wire. I have never seen a heater fail.
I see timers and thermal switches fail. Heaters don't fail very often.
The heater and thermal switch are in the freezer area and are very close to the evaporator. You will have to take apart enough of the freezer compartment to get to these parts. You will also need to melt enough ice to get to these parts.
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