Jump to content

Water Heater AGAIN! Any Ideas?


Recommended Posts

I posted a while back about a Panasonic water heater I had that developed a fault, one of the elements fried (It is an 8kW DH-8BM1) I took it to Niyom Panich and they "repaired" it, but I never needed to use it as i fixed my old 10kW heater and used that. Well, finally the 10kW heater has after 14 years or more finally bit the dust. I unwrapped the 8kW that has been sitting for almost a year unused and went to connect it up. First problem, Niyom have replaced the boiler section with a 10kW heater and not an 8kW, never told me. They also used the original thermostat (65C safety) that is designed to fit into a clip on one side and screwed at the other side across the copper piping. Well, the thermostat for this boiler does not have a clip, it needs two screws, so they simply used 1 screw and the other end left hanging, so basically barely even contacting the pipe, so virtually no safety left other than the 98C trips on the boilers! Fantastic!

 

Now comes the wiring problem, I will post two pics of the wiring that Panasonic provide for both heaters, you can see that there are some subtle differences, the 10kW is wired a bit different and uses a 6 wire control PCB (I think it just controls the LED indicators)

 

Niyom have wired it up in a weird manner - normally the 10kW should be something like LOW - 3.5kW, MED 6kW, HI 10kW, and if I remember correctly, the 8kW should be LOW 3,5kW, MED 6kW and HI 8kW.

 

What I currently have is LO - 6.5 kW, MED 6 kW and HI 10kW, they have from what I can tell wired the 10kW boiler to the 8kW diagram, but for some reason, on LO and MED there are two elements switched on all the time, no 3 or 3.5 kW. If you can understand this let me know as I need it to be very clear as I am thinking of trying to get this across to a Thai electrician to try and sort it out as I am not keen on messing around with this sort of power with my family using water and possible dodgy electric. Thanks! It looks like the 4kW and 2.5kW are on together, or the 2.5 and 3.5. or even the 3 and 3.5???

_MG_3002.JPG

_MG_3003.JPG

Edited by Formaleins
  • Like 1
Link to post
Share on other sites
  • Replies 57
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Popular Posts

Whilst I agree with the rest of your post, this statement is untrue.   The electric water heater is one of the few appliances where almost 100% of the energy input ends up as useful energy o

Ah yes, another job by Bodge-it, Bu99er-it and Scarper Engineering ltd.   The two diagrams are sufficiently similar that you ought to be able to make it work with the 10k element and the 8k

That, seems like a very good idea! 🙂 

Posted Images

6 minutes ago, ThailandRyan said:

Looks a right mess to me, and I would be trying to draw out the wiring diagram if it were me.  Do not fret, I am sure @Crossy will be along with the right answers you seek.

It is a bit of a Caffuffle I have to admit. I hate the high power stuff, 5V, 12V computers and electronics are OK but 10kW and 240V is a bit on the serious side for me, I hate pain and I doubt my heart would take it these days. The problem with a lot of it is that nothing on the diagrams is colour coded, and between the two different shower cases, the wiring is going to a lot of different places, they are by no means identical.

Edited by Formaleins
Link to post
Share on other sites

Yes wiring here is not set to a uniform standard.  I have watched a white wire being tied into a red wire, a blue wire, and other hot ends, instead of being tied to other whites as neutrals.  Makes it hell for someone who comes afterwards and tries to figure out the diagram.  I had to pull my Easycut breaker box apart and reconnect the breakers the right way and ensure the main was wired correctly.  In my younger years I did commercial/industrial and residential wiring in California, but decided to go into a different career path.  Climbing into Attics, crawl spaces, and running wiring on tilt-ups was not my idea of fun, especially when the dry wall boys would cover up where the plugs were suppose to go and did not cut out where the 4s or 5s boxes were.

  • Like 2
Link to post
Share on other sites
2 minutes ago, ThailandRyan said:

Yes wiring here is not set to a uniform standard.  I have watched a white wire being tied into a red wire, a blue wire, and other hot ends, instead of being tied to other whites as neutrals.  Makes it hell for someone who comes afterwards and tries to figure out the diagram.  I had to pull my Easycut breaker box apart and reconnect the breakers the right way and ensure the main was wired correctly.  In my younger years I did commercial/industrial and residential wiring in California, but decided to go into a different career path.  Climbing into Attics, crawl spaces, and running wiring on tilt-ups was not my idea of fun, especially when the dry wall boys would cover up where the plugs were suppose to go and did not cut out where the 4s or 5s boxes were.

That is what I am finding here, whites tied to neutral on parts of the switches, browns tied to blues, whites tied to blues, reds tied to blacks!

It is a real hotch potch, if I can get a good spark to take a look and if he understands he can have the job. No way am I taking anything to Niyom Panich again. If I have to do it it means removing the heater again and spending hours trying to trace every wire, and the 8kW heater has a totally different setup from the 10kW, wires that go directly to the elements on one go through flow switches on the 10kW...I am not in the mood to electrocute myself or anyone else.

Link to post
Share on other sites
11 hours ago, ThailandRyan said:

Yes wiring here is not set to a uniform standard.  I have watched a white wire being tied into a red wire, a blue wire, and other hot ends, instead of being tied to other whites as neutrals.  Makes it hell for someone who comes afterwards and tries to figure out the diagram.  I had to pull my Easycut breaker box apart and reconnect the breakers the right way and ensure the main was wired correctly.  In my younger years I did commercial/industrial and residential wiring in California, but decided to go into a different career path.  Climbing into Attics, crawl spaces, and running wiring on tilt-ups was not my idea of fun, especially when the dry wall boys would cover up where the plugs were suppose to go and did not cut out where the 4s or 5s boxes were.

I had to rewire  my entire  house after the electrician had done  it  in all the wrong  colours about 8 years  ago

  • Like 2
Link to post
Share on other sites
49 minutes ago, Crossy said:

 

Whilst I agree with the rest of your post, this statement is untrue.

 

The electric water heater is one of the few appliances where almost 100% of the energy input ends up as useful energy output (in the hot water).

 

Gas heaters are very effective, but try holding your hand over the exhaust to see just how much energy (>40% for a really good heater) is not going into the water.

 

EDIT Also, without proper installation / ventilation they can be silently deadly (carbon monoxide poisoning). If you don't already have them I would install CO alarms.

 

I also got a gas water heater , and i have to agree on the efficiency part . Gas water heaters got the power without needing big electric power .

  • Like 1
Link to post
Share on other sites
3 hours ago, bodga said:

I had to rewire  my entire  house after the electrician had done  it  in all the wrong  colours about 8 years  ago

Same here! First we built a new house for my wife mother and father, and i thought it was a good idea to hire an electrician. However, I could have saved 30k baht in work costs as I had to re-wire all as well. 🙂 

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    No registered users viewing this page.


×
×
  • Create New...