The fault 507, 516 or 517 appears in the display of the digital control panel CP plus – what must I do?

Remote control Truma CP plus

Remedy fault 507 / 516 / 517 (gas supply interrupted)

Note: If the fault 507, 516 or 517 is displayed in the heater’s control panel, switching the control panel on and off does not help. This does not delete the fault, but blocks the heater for 15 minutes. The heater is also blocked for 15 minutes if the fault 507, 516 or 517 is deleted four times without the gas supply being established.


Remedying flashing fault 507 / 516 / 517 (gas supply interrupted)

The fault code 507, 516 or 517 flashes because the heater is still in a 15-minute blocking time. This was possibly caused by the heater control panel being switched off or because the heater’s 12-Volt supply was interrupted. The heater is also blocked for 15 minutes if the displayed fault is deleted four times without the gas supply being restored.

  • Wait out the 15-minute blocking time for the heater. During this time, do not switch off the heater’s control panel and also do not interrupt the power supply.
  • As soon as the heater’s blocking time has expired, the fault is then displayed permanently rather than flashing. It can now be deleted as described in the point above.
     

Important information about the new Truma App release in March 2018

Integrate your Alde heater into the iNet System

Good news for Alde heater users. From April 2018, you will be able to integrate the Alde compact 3020 HE with new control panel into the Truma iNet System. All you have to do is connect the heater to the iNet Box.

  • This is great news above all for campers who use or would like to use a Truma air conditioning system or Truma LevelControl. You can now conveniently use all devices via the iNet System. From controlling the heater and air conditioning to using the automatic climate control and checking the gas level, all it takes is a single app.
  • The new version of the Truma App will be available from March 2018.

Important: Deactivate the automatic update function

  • Previously, Truma App users could download new releases to their smart phone and still have two months to install the new firmware onto the iNet Box via Bluetooth.
  • For the new update, the complexity of the project forced us to suspend this rule. This means that the two-month time frame does not apply for this release. You must update both your app and the iNet Box with the new firmware simultaneously.
  • If you have automatic updates activated in the Truma App, please deactivate this function and switch to manual updates. This will allow you to decide when you wish to install the update.
  • Otherwise, the app will perform the update automatically. If there is no Bluetooth connection to your iNet Box at this time, it will not be possible to update the firmware. The iNet Box will then no longer function until the new firmware is installed.
  • This is particularly important for campers who have parked their vehicle outside Bluetooth range and wish to use the iNet System.
  • For the next releases, the two-month time frame will apply as usual.

Do you have any questions? The Truma Service team will be happy to help.

No more empty gas cylinders

Gas cylinders have the annoying habit of becoming empty in the middle of the night. You can put a stop to this with the Truma DuoControl CS which automatically switches from the empty operating cylinder to the reserve.

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The Truma dual-cylinder gas pressure regulator automatically switches to the reserve cylinder. The integrated crash sensor allows you to operate the gas system safely even when on the road.

Continue reading

Controlling heating systems and air conditioning systems via the Truma App

Want to turn on the Truma Combi heater whilst you are still on the ski slope so you can return to a warm vehicle? The Truma iNet System makes it possible. You can even (remote) control Truma air conditioning systems via a smartphone or tablet – for instance, when you are on the beach or out hiking. The new  Truma air conditioning control ensures a constant temperature in the motorhome  and coordinates the heater and air conditioning systems perfectly.

Das Bild zeigt den Überblick des Truma iNet Systems

The heart of this system is the Truma iNet Box. It is the central control unit of the system and enables communication between the Truma App and the Truma devices. When near the vehicle, all commands can be issued completely free of charge via Bluetooth, and if you are further away by means of SMS. Continue reading

Air conditioning control ensures a constant temperature in your leisure vehicle

Überzeugen Sie sich vom digitalen Komfort: Ob beim Städtetrip oder beim Wandern – mit einem Fingerwisch steuern Sie Ihre Truma Klimaanlage.

There is no way of knowing what the weather will be like. Not even in Italy. Being able to control your air conditioning system means you can cope whatever the temperature. The Truma iNet Box acts as a central control unit linked to the networked Truma devices.

It forms the interface to the Truma Combi and the air conditioning systems, and also enables the devices to communicate with each other.  The new air conditioning control function controls the system via the Truma App. The digital control panel CP plus – iNet ready coordinates the Truma air conditioning system and the Combi heater perfectly. Continue reading

CP-plus digital control unit also for air-conditioning Saphir Compact/Comfort RC

The digital control unit

bild CP-Plus 2

can not only be used for our heater type Combi 4 or Combi 6 (gas/electro- or dieselversion), but is also compatible with our air-conditioning system Saphir Compact  and Comfort RC.

It must be notified, that the air-conditioning System Saphir Compact can only be operated with the digital control unit with serial-number 23091001 or higher. Otherwise the electronik must be changed in adition.

Heat exchanger

Replacement of the heat exchanger is not necessary for Truma liquid gas heaters

Worried customers frequently ask us about the regulation that stipulates that heat exchangers in vehicle heaters need to be replaced after 10 years.

Here is our detailed explanation: (This can also be submitted to the TÜV/Dekra if they do not have a copy.)
In compliance with the Road Traffic Regulations “Technical requirements for vehicle parts for the type test in compliance with §22a StVZO” dated 05.07.1973 for heaters operated with liquid fuels (diesel, petrol), the heat exchanger must be replaced after 10 years of use.

The reason for this are combustion residues.

In the new version of these “Technical requirements” dated 19.03.1990 the Federal Motor Vehicle and Transport Authority also demands the replacement of the heat exchanger in heaters operated with gaseous fuels after 10 years.

However when liquid gas is combusted, no corrosive elements are created that could corrode the heat exchanger of the liquid gas heaters, so that for reasons of safety, a replacement of the heat exchanger is not necessary.
Knowing this, we are convinced that the safety and quality of the Truma products can always be guaranteed well beyond 10 years, which is why we decided to prevent the enactment of the new version of the “Technical requirements” for the benefit of our customers!

We commissioned a technical report on corrosion to assess the durability of Truma liquid gas heaters from the Research and Material Testing Institute for Civil Engineering, Corrosion Protection department, which came to a very clear result: “Heaters of this type can be operated without problems for 30 years or more, without any signs of leaks caused by corrosion”.

Based on this report we were able to convince the Motor Vehicle and Transport Authority to extend the periods of use of the heat exchangers in liquid gas heaters and the exhaust-carrying pipes from 10 to 30 years in the “Technical requirements for vehicle parts in compliance with §22a StVZO”.

This means that these costly replacements that have no technical relevance and do not benefit the customer are no longer necessary.

This now means that anyone who has installed a Truma liquid gas heater Trumatic C, E or S-K in their motorcaravan is freed of their duty to replace the heater exchangers and exhaust pipes over the next years.

Note:

The heater exchangers/combustion chambers in heaters in motor vehicles (lorries and motorcaravan) that were built between 1993 and 2006 must be replaced (after 30 years).
Older heaters have permission to operate in non-compliance and newer vehicle have an E1 code that relieves them of this duty. Example: A replacement duty for e.g. the year of construction 1993 would then come into effect in 2023.
The heat exchangers in caravans are not affected by this regulation.

Older S-heaters – what you need to be aware of!

Anyone who wants to purchase a vehicle with an older Truma heater should note the following: The device should always be inspected by an expert or qualified workshop to check for faults. After so many years of use, it is possible that there may be gaps in the heat exchanger between the two half-shells that are pressed together with a sealing compound.

If the exhaust fumes (carbon monoxide) leak into the inside of the vehicle, this may, in worst case scenarios, kill the passengers.
Exhaust fumes can also enter the inside of the vehicle from corroded aluminium exhaust ducts. Since 1982 Truma has only fitted exhaust ducts made of stainless steel. Unfortunately, the exhaust ducts cannot be simply replaced 1:1 on heaters built before 1981 because they cannot be connected to the heat exchanger of the old heaters.

More information about “Replacing the heat exchanger”

 

 

Reliable operation of the Truma S-heater

The heater is supplied with gas via a special connection (1). This is either ignited via a battery-operated auto ignition kit (2) or mechanically at the push of the button via the Piezo ignitor in the burner (3). Via the Mica window (4) it is possible to check whether the gas has ignited. External air is sucked into the heater via an inlet (5) and heated via the open flame in the burner (3). The hot air flows through the S-shaped heat exchanger (6) and escapes into the atmosphere together with the exhaust combustion gases via the exhaust pipe (7) and the roof cowl (8). Thanks to the thermo-electrical safety pilot and the fact that the system is completely closed, this process is 100% safe. The heat exchanger (6) heats the direct ambient air in the heater casing. It escapes into the living space through the lamellae of the covers and is distributed within the caravan via the fan (14) as required.

The temperature of the heater can be set steplessly and manually via the control panel knob (9), which activates the safety pilot valve (12) via the control panel rod (11). Once the required room temperature has been reached, a thermostat sensor (13) controls the gas supply to the burner and weakens it accordingly. The fan is controlled via a second control knob (10).

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The electrical ancillary heater Ultraheat (15) is an ideal extra for all those who want to use additional electrical heating to heat up their vehicle very quickly independently of the gas system. It heats very quickly and uses the fan of the S-heater to distribute the warm air efficiently in the caravan.

Functional principle of the motorcaravan heater Truma Combi

The heater is started on the Truma Combi LCD control panel (1) and the required temperature for the heater and warm water is set. The heater is connected to the vehicle’s gas supply via the gas connection (2). The gas supply to the heater is controlled via the solenoid valve (3). The required combustion air enters the device via the external pipe of the combined combustion air/exhaust gas cowl (4) where it is transported to the gas burner (6) via the combustion air burner (5). The gas burner, which is equipped with two igniter plugs (7) and a flame rectification electrode, ignites the gas-air mix in the combustion chamber (8).

The hot exhaust gases are deflected at the end of the combustion chamber on the baffle plate of the flame tube (9) and flow back between the flame tube of the burner and the inner wall of the heat exchanger. They escape into the atmosphere via the exhaust gas cowl (4).

The circulating air fan (10) sends the air that is to be heated into the inside of the device. This air flows along the ribs of the heat exchanger (11) that, thanks to its large transfer surface, ensures optimum heat transfer. There are also additional electrical heating rods (12) with 1,800 Watt inside the heat exchanger that can be used to either heat the water and/or warm air. Then the warm air is distributed throughout the vehicle via four warm air outlets (13).

The fresh water is kept in the outer stainless steel water tank that has a volume of 10 litres (14). It is heated from here via the transfer of heat from the heat exchanger (11). Thanks to the eccentric shape of the water tank, the warm water is circulated ensuring an optimum mix and better temperature layering. The warm water connection pipe (15) connects the Truma Combi to the warm water pipes in the kitchen and bathroom. Cold water is pumped from the fresh water tank via the cold water connection pipe (16).

Schnittmodell_Truma Combi_DE.jpg

The room temperature sensor (17) fitted in the vehicle measures the air temperature in the vehicle. Also, the water temperature is measured using the internal temperature sensor. Before the required heater and water temperature is reached, the device reduces the heating output. Once the set temperature has been reached, the burner shuts down. If the set heater and water temperatures are undercut, the Truma Combi automatically restarts to heat up the air and water (winter mode). In summer mode, the warm water heater can be operated separately from the heater. The HDF thermal sleeve (18) ensures good insulation of the Truma Combi-heater.