Failure, troubleshooting and repair: repair yourself?Duval thema c23E saunier sanitary failure

And if they were repairing rather than throwing and change? Rediscover the pleasure of the repairs yourself. How to diagnose a problem or find spare parts? Repair itself is way to save money generally!
danpel
I discovered econologic
I discovered econologic
posts: 9
Registration: 21/07/20, 10:04

Duval thema c23E saunier sanitary failure

Unread Messageby danpel » 21/07/20, 10:08

Hello,

my boiler no longer produces hot water although the heating side is working fine.
I replaced the water valve and the reversing valve but nothing helps, when the water is drawn the boiler does not trigger, if I manually use the microswitch it works.
Do you have an idea ?

Thank you

Daniel
0 x

User avatar
Christophe
Moderator
Moderator
posts: 53619
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 1431

Re: Malne sanitary saunier duval thema c23E

Unread Messageby Christophe » 21/07/20, 14:29

From what you explain the boiler does not detect the flow of sanitary water .... so it's definitely a problem with the flowmeter.

I don't know how exactly the DHW flow rate is detected on gas boilers, but there is necessarily a sensor.

Maybe a differential pressure sensor?
0 x
Ce forum helped you? Help him too so that he can continue helping others - Win 10 € for your 1st Cdiscount order - Publish an article on Econology and Google News
User avatar
Christophe
Moderator
Moderator
posts: 53619
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 1431

Re: Malne sanitary saunier duval thema c23E

Unread Messageby Christophe » 21/07/20, 14:31

Here is a Saunier Duval flow sensor: https://www.piecesxpress.com/article-11 ... -duval.htm

107013.jpg
107013.jpg (17.77 KB) Viewed times 405


Is that what you call water valve? If yes look at the multimeter if it works and if so look where it is connected (a relay maybe?)
0 x
Ce forum helped you? Help him too so that he can continue helping others - Win 10 € for your 1st Cdiscount order - Publish an article on Econology and Google News
danpel
I discovered econologic
I discovered econologic
posts: 9
Registration: 21/07/20, 10:04

Re: Malne sanitary saunier duval thema c23E

Unread Messageby danpel » 21/07/20, 17:22

Hello, I don't see any part listed as a sensor on the boiler part plans and no part that looks like the one you present?
For the water valve, you can see it on the following link
https://www.esc-grossiste.fr/boutique/s ... -23-e.html
0 x
User avatar
Christophe
Moderator
Moderator
posts: 53619
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 1431

Re: Malne sanitary saunier duval thema c23E

Unread Messageby Christophe » 21/07/20, 17:51

Well there is necessarily a DHW flow detector ... do you have the instructions in .pdf? If so put it here as an attachment that we have a look at ...
0 x
Ce forum helped you? Help him too so that he can continue helping others - Win 10 € for your 1st Cdiscount order - Publish an article on Econology and Google News

danpel
I discovered econologic
I discovered econologic
posts: 9
Registration: 21/07/20, 10:04

Re: Malne sanitary saunier duval thema c23E

Unread Messageby danpel » 21/07/20, 17:54

I did not find any detector as explained, here is the file and thank you for your help
Attachments
ThemaC23E.pdf
(1.47 million) Downloaded times 6
0 x
phil59
I understand econologic
I understand econologic
posts: 168
Registration: 09/02/20, 10:42
x 25

Re: Malne sanitary saunier duval thema c23E

Unread Messageby phil59 » 21/07/20, 18:00

Three-way valve HS?
0 x
danpel
I discovered econologic
I discovered econologic
posts: 9
Registration: 21/07/20, 10:04

Re: Malne sanitary saunier duval thema c23E

Unread Messageby danpel » 21/07/20, 18:05

I do not see a 3-way valve on the assembly drawing and neither at the supplier for this model of boiler
0 x
phil59
I understand econologic
I understand econologic
posts: 168
Registration: 09/02/20, 10:42
x 25

Re: Malne sanitary saunier duval thema c23E

Unread Messageby phil59 » 21/07/20, 18:08

Indeed, maybe see P1, sanitary thermostat, can it bypass, to see what happens? (penultimate page of the pdf)
0 x
User avatar
Christophe
Moderator
Moderator
posts: 53619
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 1431

Re: Malne sanitary saunier duval thema c23E

Unread Messageby Christophe » 21/07/20, 18:14

danpel wrote:I did not find any detector as explained, here is the file and thank you for your help


Ah yes I do believe that it is the water valve which fulfills this role: a membrane detects the pressure difference and regulates the gas flow.

Are you sure the valve that was changed is working?

If not yes also checks the DHW thermostat?
0 x
Ce forum helped you? Help him too so that he can continue helping others - Win 10 € for your 1st Cdiscount order - Publish an article on Econology and Google News




  • Similar topics
    Replies
    views
    Last message

Back to "failure, troubleshooting and repair: repair yourself? "

Who is online ?

Users browsing this forum : No registered users and 11 guests