Truma E525 Error: No Heat or Hot Water (1 Viewer)

May 11, 2021
19
12
Hampshire
Funster No
81,127
MH
WildAx Europa
Exp
Since 2001
Have parked our van on the drive at home to act as a spare bedroom during the festivities. However, switching on the water and heating results in an E525 H error showing on the Truma inet panel and I have no heat or hot water. The boiler fails to ignite.

This occurs whether gas, electric or mixed is set as power source. I have searched this forum but can see no other reference to error 525. Can anyone out there offer any advice or insight?

Many thanks and Merry Christmas one and all!
 

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OP
OP
wildax_woody
May 11, 2021
19
12
Hampshire
Funster No
81,127
MH
WildAx Europa
Exp
Since 2001
Good find,what a brilliant video. Yes O.P. needs a hard reset, and make sure all power supplies are in place. Those boilers are a fantastic bit of kit, BUT, can be infuriating when they throw a hissy fit.
Mike.
I got as far as a hard reset yesterday. Found another video, although this one is clearer. Sadly the hard reset seems To have made no difference. Seems a trip to my friendly local dealer is called for!
 
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wildax_woody
May 11, 2021
19
12
Hampshire
Funster No
81,127
MH
WildAx Europa
Exp
Since 2001
You could try a hard reset at the Truma unit. Explained here:

Thanks Drexl. I found another hard reset vid yesterday, although this one is clearer. Sadly this has made no difference. I fear this may be a deeper issue brought on by the recent period of sub zero temperatures.

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Feb 16, 2020
2,354
3,228
KT15.
Funster No
68,772
MH
Sunlight. T66. 2019.
Exp
Absolute beginners.
10 amp Fuses on the board ?
Was the boiler drained down, it should have triggered the dump valve to open in that cold spell?
Have you a Multi tester? If yes start verifying power to the boards, 240 v ac,& 12v dc.
Mike.
 
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Feb 16, 2020
2,354
3,228
KT15.
Funster No
68,772
MH
Sunlight. T66. 2019.
Exp
Absolute beginners.
When I did a reset it failed twice before I realised you can hold the reset button for too long as well as not long enough. You have to be guided by the led lights and release the button when the amber one starts flashing.
There's generally also the audio clue of the " double click " from the boiler itself when the reset has been achieved.
Mike.
 
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Aug 6, 2021
92
143
Funster No
83,247
MH
panel van conversion
If you're trying to use on mains power check your Truma electrical supply consumer unit switch hasn't tripped.

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Oct 4, 2019
381
502
Milford on Sea
Funster No
64,934
MH
Globecar Campscout
Exp
Since 2005
We had a recurring E525 problem. Tried the hard reset to no avail. Took it to “friendly local dealer” who charged me a lot of money to check the fuses and then said it must be the circuit board and would I pay £210 for a new one which they would then fit at extra cost. Began to realise they hadn’t a clue and were playing the old game of replace things until it works. Rang Truma who booked me in to Derby a few weeks later. Drove up there and after talking to a technician for a few minutes he said he was pretty sure it was a faulty reset switch. Two hours later and a bill for less than £100 he had replaced the switch, run it up and it’s been perfect ever since.
 
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wildax_woody
May 11, 2021
19
12
Hampshire
Funster No
81,127
MH
WildAx Europa
Exp
Since 2001
We had a recurring E525 problem. Tried the hard reset to no avail. Took it to “friendly local dealer” who charged me a lot of money to check the fuses and then said it must be the circuit board and would I pay £210 for a new one which they would then fit at extra cost. Began to realise they hadn’t a clue and were playing the old game of replace things until it works. Rang Truma who booked me in to Derby a few weeks later. Drove up there and after talking to a technician for a few minutes he said he was pretty sure it was a faulty reset switch. Two hours later and a bill for less than £100 he had replaced the switch, run it up and it’s been perfect ever since.
Thanks - this is good to know. I will speak to Truma when they reopen after NY. So far multiple hard resets, unplugging etc has proven unsuccessful. At least it is under warranty!
 
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Jan 30, 2016
18
25
glos
Funster No
41,520
MH
a class
Exp
15yrs
Thanks - this is good to know. I will speak to Truma when they reopen after NY. So far multiple hard resets, unplugging etc has proven unsuccessful. At least it is under warranty!
We had a problem with a much older Truma in our Hymer
Truma advice helpful but really too old for them
Sorted over the phone by Ian Hollingworth who was super helpful and knowledgeable
http://www.motorhometech.co.uk/ ian hollingworth (karian616@gmail.com
 
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Oct 4, 2019
381
502
Milford on Sea
Funster No
64,934
MH
Globecar Campscout
Exp
Since 2005
Thanks - this is good to know. I will speak to Truma when they reopen after NY. So far multiple hard resets, unplugging etc has proven unsuccessful. At least it is under warranty!
I see you are Hampshire as are we. If you have to take it to them it’s not a bad trip but long. There’s an all year site very close and their service is first class. It sounds very much like the same problem we had.
 
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Jul 11, 2020
543
1,440
Southampton
Funster No
72,887
MH
Benimar Tessoro T486
Exp
Since August 2020
Have parked our van on the drive at home to act as a spare bedroom during the festivities. However, switching on the water and heating results in an E525 H error showing on the Truma inet panel and I have no heat or hot water. The boiler fails to ignite.

This occurs whether gas, electric or mixed is set as power source. I have searched this forum but can see no other reference to error 525. Can anyone out there offer any advice or insight?

Many thanks and Merry Christmas one and all!
Did you ever resolve? I had an E525H today, followed the procedure in the video to hard reset but no joy. The relay clicked and the boiler whirred and then the fault returned.
I knew that gas supply was fine as bottle had just been changed and cooker and fridge were working.
Returned home, blurry cold and put on EHU. Magic! Heating working and no fault.
So must be gas? Checked bottle, regulator, connection - all ok but then thought about the manifold taps. All in right position to be open BUT then spotted tap icon for boiler supply was upside down so in right position but still closed.
Twisted it 180, error disappeared, heating on gas.......
 
Upvote 0
Oct 4, 2019
381
502
Milford on Sea
Funster No
64,934
MH
Globecar Campscout
Exp
Since 2005
Did you ever resolve? I had an E525H today, followed the procedure in the video to hard reset but no joy. The relay clicked and the boiler whirred and then the fault returned.
I knew that gas supply was fine as bottle had just been changed and cooker and fridge were working.
Returned home, blurry cold and put on EHU. Magic! Heating working and no fault.
So must be gas? Checked bottle, regulator, connection - all ok but then thought about the manifold taps. All in right position to be open BUT then spotted tap icon for boiler supply was upside down so in right position but still closed.
Twisted it 180, error disappeared, heating on gas.......
What does "tap icon for boiler supply was upside down" mean?
 
Upvote 0
Jul 11, 2020
543
1,440
Southampton
Funster No
72,887
MH
Benimar Tessoro T486
Exp
Since August 2020
What does "tap icon for boiler supply was upside down" mean?
The manifold taps have a picture (icon) on each - snowflake for fridge tap, cooker for errr the cooker tap and a hot water tap for the boiler. The latter was turned upside down with the tap handle at the bottom and so was turned off - no gas getting thru
 
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PeteN

Free Member
Mar 27, 2023
4
0
Funster No
94,846
MH
WildAx Aurora Les XL
Hi,

First posting and new camper. I have had similar problems.

We took delivery of our WIldAx last year and had a fantastic time. Great van. However we have run into problems with the Truma Combi (4E). We used the heater last year and recently this year on EHU and gas - no problems.

However an error has occurred.

I get a recurring E525H error. Initially occurred a few weeks ago after unhooking EHU (presumably did something in the wrong order). Eventually the error was cleared after hard reset and shut down and restart of Truma CP and the vans electrics controller. It took a few attempts but eventually system reset and ran on gas perfectly.

This weekend at a campsite on EHU (which powered microwave fine) we ran the hot water and heating using the Electric. No issues. As we were packing up I switched to gas on the Truma CP system (EHU still connected) and the E525H came up. Soft resets cleared the error but it came up again after a few seconds. Same after hard reset. Shut down of the truma CP and the van eclectics and then removal of the EHU cable and then restarting the van 12V and CP system did not solve it. The solenoids click the fans start and then after 10 sec the error changes to a E515 Have tried hard resets (on combi pressing reset button until amber light flashes). Error clears and then fans start and cut out after about 10 seconds.

Van is back home now and resets have been tried again. Various resets and fan starting before cutting out with a E515 error. Sometimes I get a lock out for 15 min. But error returns once 15 min elapsed.

I called truma and local service centre. Bring it in etc was all I got.

I put a EHU on the van this evening and selected EL1 and tried again. Error cleared and heat!!! Set temp to zero and switched to gas… heating kicks in- no error! Switched the TRUMA CP off and unhooked the EHU. Switch back on and set for heat and E515!!!! Resets didn’t clear. EHU back on. After a couple of errors they cleared and we have heat again. Switched off and took out EHU and powered up again with gas as the input. Heater working.

So seems my system has a problem with EHU and either uncoupling or switch off sequence! What’s going on? For now systems works on gas. Think I may need to avoid EHUs unless there is some advice here?
 
Upvote 0
Feb 16, 2020
2,354
3,228
KT15.
Funster No
68,772
MH
Sunlight. T66. 2019.
Exp
Absolute beginners.
Are you letting the current selected programme finish it's cycle before pulling the EHU?
 
Upvote 0
Oct 4, 2019
381
502
Milford on Sea
Funster No
64,934
MH
Globecar Campscout
Exp
Since 2005
Are you letting the current selected programme finish it's cycle before pulling the EHU?
Found something on another site that agrees with this, although you would think it shouldn't matter as the shut down cycle is internal. What might matter more, I suspect, would be switching off the 12v supply before the cycle finishes. Ring Truma and ask them, their technical department is far better than talking to your local dealer who will probably want to put a new board in "to see if that's the problem".
 
Upvote 0
May 7, 2016
7,363
11,940
West Sussex
Funster No
42,951
MH
Malibu Van 640 LE K
Exp
Since 2003
Found something on another site that agrees with this, although you would think it shouldn't matter as the shut down cycle is internal. What might matter more, I suspect, would be switching off the 12v supply before the cycle finishes. Ring Truma and ask them, their technical department is far better than talking to your local dealer who will probably want to put a new board in "to see if that's the problem".
If the 12V power to my panel is shut off before the Combi system is properly closed down my iNet Box sends me a 255H message. If you are having problems it may be worth closing the panel down by holding the button in before disconnecting either 12V or 230V. Holding the button in initially shows APP and then closes down.

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suavecarve

LIFE MEMBER
Aug 18, 2009
7,667
39,416
Surrey/Hants
Funster No
8,035
MH
Rollerteam 685
Exp
July 09
Hi,

First posting and new camper. I have had similar problems.

We took delivery of our WIldAx last year and had a fantastic time. Great van. However we have run into problems with the Truma Combi (4E). We used the heater last year and recently this year on EHU and gas - no problems.

However an error has occurred.

I get a recurring E525H error. Initially occurred a few weeks ago after unhooking EHU (presumably did something in the wrong order). Eventually the error was cleared after hard reset and shut down and restart of Truma CP and the vans electrics controller. It took a few attempts but eventually system reset and ran on gas perfectly.

This weekend at a campsite on EHU (which powered microwave fine) we ran the hot water and heating using the Electric. No issues. As we were packing up I switched to gas on the Truma CP system (EHU still connected) and the E525H came up. Soft resets cleared the error but it came up again after a few seconds. Same after hard reset. Shut down of the truma CP and the van eclectics and then removal of the EHU cable and then restarting the van 12V and CP system did not solve it. The solenoids click the fans start and then after 10 sec the error changes to a E515 Have tried hard resets (on combi pressing reset button until amber light flashes). Error clears and then fans start and cut out after about 10 seconds.

Van is back home now and resets have been tried again. Various resets and fan starting before cutting out with a E515 error. Sometimes I get a lock out for 15 min. But error returns once 15 min elapsed.

I called truma and local service centre. Bring it in etc was all I got.

I put a EHU on the van this evening and selected EL1 and tried again. Error cleared and heat!!! Set temp to zero and switched to gas… heating kicks in- no error! Switched the TRUMA CP off and unhooked the EHU. Switch back on and set for heat and E515!!!! Resets didn’t clear. EHU back on. After a couple of errors they cleared and we have heat again. Switched off and took out EHU and powered up again with gas as the input. Heater working.

So seems my system has a problem with EHU and either uncoupling or switch off sequence! What’s going on? For now systems works on gas. Think I may need to avoid EHUs unless there is some advice here?
Do you have a window near your kitchen?
If Yes, have you ever opened it ?
If Yes, on the underside outside is there a cut out switch that has fallen out because they are cheap switches ?
 
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Feb 16, 2020
2,354
3,228
KT15.
Funster No
68,772
MH
Sunlight. T66. 2019.
Exp
Absolute beginners.
This may be overkill on my part but, I now always turn of any programme running on the menu, hotwater/heating function. I've had no problems since.🤷‍♂️🤷‍♂️
Mike
 
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PeteN

Free Member
Mar 27, 2023
4
0
Funster No
94,846
MH
WildAx Aurora Les XL
Found something on another site that agrees with this, although you would think it shouldn't matter as the shut down cycle is internal. What might matter more, I suspect, would be switching off the 12v supply before the cycle finishes. Ring Truma and ask them, their technical department is far better than talking to your local dealer who will probably want to put a new board in "to see if that's the problem".
Thanks for ideas.

Might be being a bit slow but what does finish its cycle mean? How long does tit take. When do you know when finished.

Note I also got the error switching from EL1 to Gas. Do I need to switch the hot water to off and the temp to zero wait a bit (finish cycle?) before selecting gas?

Switching of 12V before the CP gives the 255 error - simple soft reset normally sorts.

I rang Truma but didn’t get through to anyone who could help - they directed me to local service centre…

Checked combi tonight. Fired up on gas no errors- phew. Still wary of EHU powering the boiler.

Cheers.

Pete
 
Upvote 0
Feb 16, 2020
2,354
3,228
KT15.
Funster No
68,772
MH
Sunlight. T66. 2019.
Exp
Absolute beginners.
View what's active on the top status bar, scroll it through to off before disconcerting EHU
Do other's do the same, or is it just me?
Mike.
 
Upvote 0
Oct 4, 2019
381
502
Milford on Sea
Funster No
64,934
MH
Globecar Campscout
Exp
Since 2005
Thanks for ideas.

Might be being a bit slow but what does finish its cycle mean? How long does tit take. When do you know when finished.

Note I also got the error switching from EL1 to Gas. Do I need to switch the hot water to off and the temp to zero wait a bit (finish cycle?) before selecting gas?

Switching of 12V before the CP gives the 255 error - simple soft reset normally sorts.

I rang Truma but didn’t get through to anyone who could help - they directed me to local service centre…

Checked combi tonight. Fired up on gas no errors- phew. Still wary of EHU powering the boiler.

Cheers.

Pete
Pete,
When you switch the Truma off you will hear it go through a series of actions ending up with silence as it completely closes down. If you know you are going to switch supply while using the heater or water heater why don't you just leave it on the Mixed setting and it should do it automatically. Suggest you put it on EL and after making sure the boiler is full, run heat and hot water on EHU only. If it works switch off and leave it to finish. A bit later try them both on gas and do the same switch off procedure leaving the power on all the time. Can't help more than that because it was our reset switch that was faulty and yours is apparently working, although it is a bugger to find on the newer boilers with the smaller hole. At least if both systems work independently of one another you will know what to do to avoid error messages.
 
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