clean the filter first

confirm the wiring is not corroded or overheated/melted

then if all good on wiring still occur same problem buy new one - (Non-Jet Pump) DH-3MS1MW - M series is better build

N series newly installed already tank leaking (see earlier post in this thread). Generally newer series have more extreme cost cutting.

For Panasonic DH-3RP1, which plug socket should i ask contractor to use?

Normally i see 15A, then i google.. advised to use 25A? Is 15A sufficient?

Sorry newbie here. What is the difference between the jet pump and non jet pump version? I am getting instant heaters for my new condo but not sure which one to go for between these two models.

Panasonic DH-3MS1
Panasonic DH-3MP1 (with jet pump) - What is the difference between this and DH-3RP1MK though?
Centon EcoSerene Series (with DC Silent Pump)
Centon Serene Series (with optional pump and rain shower)

This post has been edited by coolguy99: Oct 31 2020, 08:15 AM

Is one with and the other without a pump.

Depending in your inlet piping connection ... direct from main, not necessary as the pressure is strong unless other household are using the same time like the kitchen tap, then the pressure will drop.

Thanks in that case I think I will be getting the one with DC pump. Which will you recommend between these 3 brands? I know most will go with Panasonic but what about the other 2?

Toshiba DSK38ES3MB-RS
Panasonic DH-3MP1 (with jet pump) - What is the difference between this and DH-3RP1MK though?
Centon Serene Series (with optional pump and rain shower)

I have only exp with ...

1. Pana ... 2 units with pump at 1st floor bathroom and 1 with no pump at ground floor. 11 years.

2. Electrolux ... 2 units with pump at 1st floor bathroom at my homestay unit. 3 years.

Both brands have no issue todate.

The rest, wait for others to comment.

Either Pana or Toshiba or Bosch or Hitachi WH.
Pana and Hitachi has push start button so when your eyes got shampoo you can easily on water again.
Pana DH-3MP1 is cheaper comparatively when compared with pump model of Hitachi but do not get new N series, get previous M series better built quality, new one too much cost cutting until new unit also leak.
Hence recommended is DH-3MP1 if you need pump.

Toshiba is OK also, Bosch also OK, but the only drawback is no push start. Toshiba pump model quite cheap.
Safety wise stick to bigger brands better.

Traditionally we have all non pump, 2 National's, 1 square Pana old model still working, 1 new DH-3MS1
We had a (cheapo but not sold cheap to us) Mira brand recommended by xxxxxxxx electrician that scalded us every single time (terrace house pressure not that good). This incident was why we always insist on Pana WH. The temp range and temp control is better. Whilst it was still working we decided not to give away this headache and just threw it away.

This post has been edited by ceo684: Oct 31 2020, 02:37 PM

Thanks ceo684. Will take your advice to stick to the bigger brand. So I will decide between the Panasonic DH-3MP1 and Toshiba DSK38ES3MB-RS

This post has been edited by coolguy99: Oct 31 2020, 03:16 PM

Planing to buy water heater with large rainshower head

But my question is

DC or AC?
Pump or Non Pump?


My choice are 3 brands

Rubine
Alpha
Rinnai

Which one is better

Rubine Water Heater

Alpha Water Heater

Rinnai Water Heater

ceo684

This post has been edited by shebbycs: Nov 25 2020, 05:22 PM

This seems very interesting, how many bathrooms can use it at the same time? Water flow?

1 Masterbathroom with long bath (1st floor), and two smaller bathrooms (G and 1st floor).

2 options:
1) Share water heater to 3 bathrooms. Piping would take an additional approximately MYR1.5k.
2) Get a smaller storage heater, and 2 individual instant heater.

The only pro that i can think of for option 1 is that the sink for the two smaller bathrooms would have hot water access as well.

Is there a storage water heater that can be left running without switching it off? There will be only one switch for the water heater and it'll be inconvenient

Surely with Pump.
DC or AC doesnt matter, just its about noisy or not.

Panasonic DH-3RP1???

Is it better for me to pay a bit more and get Panasonic DH-3MP1 with One Push Stop System so that i will not have the issue of the pump running even after i off the water?

parking

If you can remember to off the pump when not in use then can couple it with an external pump for better pressure. Bear in mind those will need good quality piping as higher pressure more prone to leaks for the high pressure portions. If want to be safe then the integrated pump like MP1 Pana WH is the safe bet, it will work great for the Pana shower head

but if you are using with big rain shower and with external pump then the concern about not heating enough and pipe pressure will still be there.. if u go this way, there are 4800W heaters from hitachi and Pana to give extra heat, but since this is high power device u cannot run this with normal cables so need to direct a new line say 4/6mm (cost is negligible between the two so I'd suggest 6mm) because of much more amps..it will take about 20A nominal so 4mm(32A) capacity will be your minimum cable size, 6mm recommended to ensure that the cables keep cool.

Panasonic DH-3MP1 or Joven SC33P ?

Both roughly the same price. Joven's chrome sliding bar seem more nice (compared to Pana white plastic one)
Pana one push stop system is nice but Joven dont have that function

What does it mean by the pump continue to run after turning off the water? Shouldn't the pump stop automatically after we turn off the water?

External pumps that are not integrated with the heater will continue to keep the pump output section pressurised whether you off the water heater or not, unless you turn off the pump electricity.

This post has been edited by ceo684: Nov 30 2020, 10:54 PM

Thanks ceo684. Instant water heater like Panasonic DH-3MP1 wouldn't have such problem I assume since the pump should be integrated with the heater?

Heater pumps are inside the heater. :-D
so surely it will be turned off when heater is not used. :-)