Heater failure!

  • We are currently upgrading MFK. thanks! -neo
Hello; I guess the old style heaters which use contact points are no longer made. I have some from decades ago. Every few years to a decade or so the contact points can deposit a small tit which keeps the heater on or hard to adjust. I do take them apart and file the points.

Do as duanes suggests. Have several lower wattage heaters in place of a big watt one. I like to set a lower wattage heater to come on first and a second or third higher wattage to come on a degree or two higher. The low watt heater will stay on and the others only on when the low watt cannot keep up.
I've taken apart a few failed ones the last couple years, all maybe 5ish years old. Aqua One and Eheim. They still had bimetallic strips and contact points. Failure point was the nichrome wire for the heating element though split on all 3.
 
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Not all Chinese products are bad. It's the brands themselves that take shortcuts. Inkbird is made in China and that temperature controller is widely used and trusted.
 
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This ^ certainly. A simple overcurrent situation, caused either by attempting to feed a device or devices that draws too much current or by a simple short to ground, will quickly trip any standard breaker. The idea is to protect the wiring, which is rated for a certain amount of current capacity. Rather than allowing the current to exceed that, resulting in a dangerous condition where the wire starts to heat up, a standard breaker trips.

A ground fault breaker does that as well, but in addition it detects an imbalance between the hot and neutral wire that indicates some current is leaking at some point. If the discrepancy exceeds some very small amount, the GFCI trips and thus interrupts that current from leaking somewhere...like through your aquarium water or your arm...as it seeks ground. The GFCI is protecting you rather than the wiring.
 
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I have one of these exact chinese heaters but my trick is to also use a chinese gfci power strip. Im not sure but I think gfci is some kind of magic fire resistance spell for reality and stuff.

On a related note, anybody got a recommendation for a 400g stock tank heater that wont cause a fire?
 
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