Truma E212H ERROR MESSAGE

[Rewirewd]

Hi
Tried using the Truma ECO heat with propane last night and got error message E 212 H
Has anyone else had this issue?
2022 Winnebago Boldt
Thanks
Greg

[@Michael]

No propane, propane pressure too high or too low, or it's overheated.

FWIW - I found the Truma US is very responsive to issues with their devices.

#122, #212 Combustion air infeed or exhaust gas outlet closed. 
            Check for obstructions such as slush, ice or leaves 
            and remove from the openings. 

            Switch for gas shut-off valve open. 
            Close switch for gas shut-off valve. 

            Gas pressure regulation system defective. 
            Contact Truma Service. 

            Overheating protection has responded.

            Switch off furnace and allow to cool; if necessary, fill the 
            water container with cold water. Check warm air outlets 
            and circulated air intake and remove blockages. Switch 
            furnace on again.

[@Michael]

Here's what I have for Truma error codes:

+============+============================================+================================================================+
| Error code | Cause                                      |  Remedy                                                        |
+============+============================================+================================================================+
| # 17       | Hot water mode with empty water container. | Switch off furnace and allow to cool. Fill boiler with water.  |
+------------+--------------------------------------------+----------------------------------------------------------------+
| # 18       | Warm-air outlet blocked.                   | Check the individual outlet openings. Circulated air intake    |
|            |                                            |   blocked. Remove blockage from circulated air intake.         |
+------------+--------------------------------------------+----------------------------------------------------------------+
| # 21       | Room temperature sensor/cable defective.   | Contact Truma Service.                                         |
+------------+--------------------------------------------+----------------------------------------------------------------+
| # 24       | Imminent undervoltage, battery voltage     | Charge battery.                                                |
|            |  too low < 10.4 V.                         |                                                                |
+------------+--------------------------------------------+----------------------------------------------------------------+
| # 41       | Electronics blocked.                       | Contact Truma Service.                                         |
+------------+--------------------------------------------+----------------------------------------------------------------+
| # 43       | Excess voltage > 16.4 V.                   | Check battery voltage and power sources, such as battery       |
|            |                                            | charger.                                                       |
+------------+--------------------------------------------+----------------------------------------------------------------+
| # 44       | Undervoltage, battery voltage .            | Charge battery. If necessary, replace old battery.             |
|            |  too low < 10.0 V                          |                                                                |
+------------+--------------------------------------------+----------------------------------------------------------------+
| # 45       | No 120 VAC supply voltage.                 | Restore 120 VAC supply voltage.                                |
|            | Overheating protection has responded       | Contact Truma Service.                                         |
+------------+--------------------------------------------+----------------------------------------------------------------+
| #112, #202 | Gas cylinder closed.                       | Check gas supply.                                              |
| #121, #211 | Switch for gas shut-off valve open.        | Close switch for gas shut-off valve.                           |
|            | Overheating protection has responded.      | Switch off furnace and allow to cool; if necessary, fill the   |
|            |                                            |   water container with cold water. Check warm air outlets and  |
|            |                                            |   circulated air intake and remove blockages. Switch furnace   |
|            |                                            |   on again                                                     |
+------------+--------------------------------------------+----------------------------------------------------------------+
| #122, #212 | Combustion air infeed or exhaust           | Check for obstructions such as slush, ice or leaves and remove |
|            |  gas outlet closed.                        |    from the openings.                                          |
|            | Switch for gas shut-off valve open.        | Close switch for gas shut-off valve.                           |
|            | Gas pressure regulation system defective.  | Contact Truma Service.                                         |
|            | Overheating protection has responded.      | Switch off furnace and allow to cool; if necessary, fill the   |
|            |                                            |   water container with cold water. Check warm air outlets and  |
|            |                                            |   circulated air intake and remove blockages. Switch furnace   |
|            |                                            |   on again.                                                    |
|            | Electronics defective.                     | Contact Truma Service.                                         |
+------------+--------------------------------------------+----------------------------------------------------------------+
| #255       | Furnace has no 12 VDC power supply.        | Ensure 12 VDC power supply.                                    |
+------------+--------------------------------------------+----------------------------------------------------------------+

I had an E81H code, which doesn't show up in public documents. It turned out to be a bad ground on the main circuit board.

--Mike

[eleveille]

Guys, I have to post something and share before someone goes dumping a bunch of money on a diag for this issue.

I got the dreaded e112h and e212h errors and called around with no one available for months to service the issue I started digging around.

Come to find out, my solis 59p has the 2 seats behind the driver where my 2 kids car seats normally go. I took them out and looked under the seat where there is a bit of storage and hidden water connections.

To my amazement, the small 1x1 piece of wood holding up the storage shelf under the seat, which was held together with 4 staples had broken and fallen on the switch that says "furnace will not operate with valve switch off" and it was half on/off. I switched it back to on and everything works again. Luckily only lost one booking as a result of being transparent with the customer but hey, no good deed goes unpunished.

I hope this helps someone who was about to get reamed up the hole by an RV dealer for a stupid oversight.

[W9TR]

E212H can mean a lot of things but usually it means that there’s no propane or that the heater is not getting 12Vdc. If you have a stove make sure it lights and runs, cycle power to the van and re-try the Truma. If that doesn’t work check the exhaust pipe from the Truma to the outside of the van for correct connection and insect nests.