I just bought a booster pump for 2 mth, today the greenlight on but the redlight heater was not on.

There is no water pumping or heating from heater.
just plain lower pressure water coming out very little what happened?

Send for warranty. Don't be a stupid hero trying to do something stupid.
Unless you want your name to come out in the headlines next day.

Have you try reset the internal elcb? If it trip again don't use it.

this morning back to normal,
maybe last night water really lack of or what...

Not really, when got water flow it will switch on even low pressure. Unless is droplet or "pee" flow.

Possible your elcb didn't detect earth and it disable for safety. Or some more press the elcb reset?

If wiring problem, it will directly trip and no lights at all.
Got lights means it is working are something failed inside. If water flow ok then it will be more serious issues.
So, asking the installer to check will be the safest way.
Changing a fuse in the main board I dare to do, changing plug's wiring piece of cake. Changing the ceiling fan also no problem.
But not instant water heater.

It happened to mine as well 1 month ago for exact same model. I called for warranty claim and they sent technician and replace the board for me within 1 week.

That night is peeflow

I guess this cause of. After that night everything back to normal

I am currently facing this problem for the pass 2 weeks too.

sometimes reset ELCB will work, sometimes don't.

sometimes off and on back the water know will work, sometimes don't

anyone got the solution?

base on previous other comment, i think should call joven agent settle this, might something faulty.

if get 2nd time on this, i would call agent come too.

seems very problematic brand with this model.. mine also same.. sometimes can sometimes not.. now cant, only green light no heater light.. pump not working heater not working..

water rationing

same problem with mine.

ask joven come fix as it is after warranty already.

service guy check and says it is sensor spoil and need change.

charge me RM 65 (around there as my wife paid while i not in).

i see, 65 include labour all that?

I've had this same problem, the Joven guy came to fix it. It's cause by a small white magnet like below pic, total cost only 30, magnet and labour incl...

0122709695 AZLAN




This post has been edited by GuyM: Jul 27 2015, 09:50 PM

i ask the plumber come already,
a very very old plumber,

he said nowadays those new contractor very lazy,
randomly screw everything without checking the current.

he fix the pipe by reattach the piping,
and check there actually a rubber need to remove before assemble inside,

he fix both all bathroom water heat turnout all very bad assemble cause low water flow.

what area lol

sunway

I just had Joven service repair done on the Model 880P due to no power or function . Service person replaced the power board EELS- 3D Rev 2. This is my first and last use of Joven Instant water heaters because of this failure. I checked bad board fuse and most components are good. If anyone has the circuitry, i would like to determine the root cause of failure.
All other instant water heaters in my home still good after 25 years, but im curious why this Joven model failed so fast

I found the transistor BC546B faulty and replaced. It is working good now. Hopefully it is reliable. My experience says Joven is not reliable compared to Panasonic based on my experience.

This post has been edited by MGeorge53: May 29 2017, 11:41 AM


Attached thumbnail(s)

That's the magnet located inside the pipe just after the water valve in the Joven heater

It activates a reed switch on the circuit board to switch on the water pump/heater..

If there is low pressure or as the magnet ages it loses its ability to magnetise (activate) the reed switch which in turn won't switch on the Joven built in water pump/heater..

that magnet has to be replaced and it'll work as normal..

It's a common fault..

To services Joven heater problem can pm me

Hi. Can quote me price of EELS-3D Rev 2 board only. No installation. Circuit fired due to fuse burned.

I feel u bro. I just had my 4 years+ “new” Joven 830i repair too, same circuit board problem. I got another 8 years+ Joven but that old model didn’t give me any problem yet. it seem the quality of the circuit board component is reduce to low cost production compare to others. Bloody greedy Joven!

Hi my old water heater having the same. Symptom. How did you remove the magnetic sensor since my magnetic sensor seems embedded in the pipe?

Hi my old water heater having the same. Symptom. How did you remove the magnetic sensor since my magnetic sensor seems embedded in the pipe?


Attached thumbnail(s)

Get a bolt with same diameter as the hole and thread the bolt in then you can pull out the stopper

Then the magnet will drop out. Just make sure you put the new magnet in the same polarity or the magnetic switch won't work

After you replace the new magnet just use the same bolt to push in the stopper and unscrew

I just replaced the magnet and it worked. Thank you guys.

Can get the magnet from Lazada, 2 for RM30.

What's the polarity of the magnet? Which side to face down?

Just pay attention when the magnet drops and replace same orientation.

Worse case scenario if it doesn't work, just reorientate the magnet and test again.

Otherwise the fault is something else or just have to get a new water heater 😁😁😁😁

This post has been edited by Richard: Dec 24 2018, 09:51 PM

If due to thermal cut out the fix is easy also. Can also cause the “no power” symptom.

Fix is just open the unit and press a button on the thermostat. But make sure heater no electric or else will have an electrifying experience.

Mr.Richard. Before this you said using a bolt and push the sensor down. I dont know what you mean by a bolt.can you show me the image of the bolt.

A bolt a threaded rod which has a six sided head as opposed to a screw which is also a threaded rod but with groove on head.

The defective magnet is in the plastic pipe while the magnetic sensor on the circuit board above that pipe.

So first unscrew the top circuit board before you can remove the plastic pipe piece holding the magnet.

Use a screw big enough to thread into the stopper in the plastic pipe then the magnet will fall out.

Just watch the correct position of the magnet because the new one needs to go in the same way.

This post has been edited by Richard: Jan 14 2019, 01:50 AM

I've created a video on how to get to the magnet

https://youtu.be/Q6J3ENNpkgo

Wow guys thanks for this thread now I don't have to call the repairman.

Would like to get help to replace the small white sensor. Watched the video, but could not get it out from the water inlet pipe.

What is the best method to get it out?

hi guys.

is there a rating to the reed switch? i bought 20mm length reed switch as shopee mostly just show how long. i measured the switch in the heater and it's also 20mm.

it burn immediately when i use it.

I had just recently working on it for Joven & Pensonic Water Heater.
https://gr8place2go.blogspot.com/2023/04/di...-hot-water.html

This post has been edited by gosleo: Jan 23 2024, 09:07 AM