Kospel Twister 3.5 kW Water Heater Issues: No Heat, Low Water Pressure, and Deaeration Fixes

Question

Welcome,
I have had problems with the Kospel Twister 3.5 kW water heater for a long time.
The device usually did not heat up in the most severe frosts and low water pressure. For the last 2 weeks it has hardly been heated at all. After deaeration, it could literally last several hours. For several days, however, it does not heat up at all. I was venting, cleaning the filter, checking if the voltage was coming, but to no avail. What else could be wrong?

retrofood · Answer

1. Heater break - check continuity with an ohmmeter; 2. Check the reaction to opening the diaphragm tap and the needle switching the heater contacts on.

osiniak75 · Answer

It is evident that the lower switch is turned on, that soot on the housing did not come from the air.

stanislaw1954 · Answer

And what has heating to frost, or frost for heating, only can only heat less, because water has a lower temperature, especially when it is from a well, but also in summer water from a good well can also have a low temperature. Low pressure has the effect of opening the flow valve, which is associated with the switch on the heaters. This may be the reason for the lack of heating.

retrofood · Answer

Apparently so, but in the third photo (housing) the burn is next to the screw hole, and this is closer to the top. Something is wrong here, although in fact there are burn marks on the bottom one. Added after 1 [minutes]: Exactly. In addition, the lack of heating could be caused by damage to the heater power control system. For example in microswitches.

Chlebuś · Answer

I mean how to apply a multimeter? This switch that activates the heater is the black element?

osiniak75 · Answer

The screw holes are on both sides, the blackened housing is centrally opposite the lower end switch.

Chlebuś · Answer

The case is upside down in this photo. The burnout is below the mounting hole on the right side of the housing (looking directly at the heater)

stanislaw1954 · Answer

The black round element activates the contacts of the heater switches. The flow of water causes the needle to move, which in turn turns on the switches on the right side.

Chlebuś · Answer

So only the replacement of the entire heating unit can help?

mawerix123 · Answer

Maybe not necessarily, but it must be checked by a person with the appropriate knowledge, burning a microswitch is not accidental, it is either the cause or effect of the defect. the cost of the microswitch itself is about PLN 20, and if something more, the repair may not be profitable.

retrofood · Answer

Calmly! While writing the first post, I haven't noticed this burn-in yet, maybe it's just a microswitch. But the reason for its destruction must be found. Factory defect or something else? This must be examined and the rest of the elements must be checked. PS. While writing this, I didn't see the post above, but we think the same.

Chlebuś · Answer

Gentlemen, today I'm back, I turn on the hot water and ... after 5 seconds the light comes on and the heater starts to heat up. I can not understand it.

Chlebuś · Answer

I bought a used similar heater and moved the entire heating unit. It works. Thanks for helping everyone interested.

Kospel Twister 3.5 kW Water Heater Issues: No Heat, Low Water Pressure, and Deaeration Fixes

Post #1

Post #2

Post #3

Post #4

Post #5

Post #6

Post #7

Post #8

Post #9

Post #10

Post #11

Post #12

Post #13

Post #14

Topic summary