Truma CP plus Manual

About these instructions

• These instructions are part of the product
• Always carry the operating instructions in the vehicle
• Also make the safety instructions available to other users

Document number

The document number of these instructions can be found in the footer of every inside page and on the back page
The document number consists of

• Part number (10 digits)
• Revision status (2 digits)
• Publication date (month/year)

Validity

These instructions apply to the Truma CP plus control panel, referred to a CP plus below

Product names

Aventa eco and Aventa comfort are referred to as Aventa below
Truma iNet Box is referred to as iNet Box below About these instructions

Target group

These instructions are intended for users
To make the text easier to read, no gender-specific distinction is made

Symbols and means of representation

Symbol	Meaning
	about dangers to persons
	Expert
	Additional information to provide a better understanding or to optimise work processes
	Symbol for an action. Something must be done here
*	Optional parts
(Fig. 3-1)	Reference to a picture e.g. Figure 3 - number 1

Intended use

Proper use

The CP plus^[1] is used to control and monitor a Combi heater and/or a Truma air conditioning system The CP plus ¹ acts as an interface to operate connected appliances via the Truma App and iNet Box
The CP plus¹ is intended for installation in caravans and motor homes

Inappropriate use

Installation in boats is not permitted

Method of operation

1. CP plus
2. Combi (D)
3. Air conditioning system
4. Heater mode (HEATER)
5. Air conditioner mode (AC)
6. Automatic climate control mode (AUTO)

Controlling connected appliances / operating mode

To control the room temperature, the CP plus controls either the connected heater or air conditioning system When a new or replacement appliance (Combi (D), air conditioning system or Truma iNet Box) is connected to the bus system, repeat the procedure described in "Initial start-up"
If a heater and air conditioning system are connected at the same time, select the required mode, heater (HEATER) or air conditioning system (AC) before setting the room temperature Alternatively, you can activate the automatic climate control mode (AUTO), see "Service menu". The CP plus then switches automatically between heater and air conditioning system This ensures an almost even indoor temperature By default, automatic climate control is switched off
If the 230 V power supply (mains electricity) is interrupted, all functions associated with the air conditioning system or automatic climate control modes are deactivated and blanked out on the CP plus
The function of the Truma automatic climate control depends on correct installation Your Truma Partner will be pleased to advise you whether your vehicle is suitable
Requirements for the automatic climate control functioning as expected:

• The air conditioning system and heater cover the entire area of the vehicle that is intended to be automatically air conditioned
• The room temperature sensor of the heater is the lead sensor of the automatic climate control and must therefore be in a suitable location, ie
  • in the area in which the required room temperature should be reached
  • if possible, not influenced by outside temperature or sunlight
  • not close to warm air ducts, cold air ducts or other sources of heat or cold
  • warm or cold air from the air outlets must not flow against the room temperature sensor Particular attention must be paid to this when adjusting the air throttles on Aventa air conditioning systems
  • with good circulation and not on the vehicle ceiling

Truma Partners are trained in the correct installation of automatic climate control
You will find our authorised dealers / Truma Partners at www.truma.com

Time control

In addition to normal operation, a time switch can also be used A time switch can be set for all operating parameters To do this, set a start time (1) and an end time (2) In normal operation, outside the time control (B), the operating parameters that were set previously remain valid (A)

If you change a parameter during the timer interval, it will remain changed until the end time After this, the parameters are reset for normal operation
The timer repeats every 24 hours

Using CP plus and IR remote control for the air conditioning system together

Even when the CP plus is connected, the IR remote control can still be used to control the air conditioning system The CP plus detects all settings on the air conditioning system that were set via the IR remote control The IR remote control sends only the settings shown on your screen (no bidirectional communication)
Use only the CP plus time switch to define the start and end time of a required period

Using CP plus and iNet Box together

1. iNet Box
2. Mobile device with Truma App
3. CP plus
4. Heater
5. Air conditioning system

In app mode, the connected appliances and the Truma CP plus go to stand-by mode and wait for new commands from the connected iNet Box
When a new command is entered via the Truma App, the connected appliances and the Truma CP plus are activated with the specified values
When a new or replacement Truma iNet Box is connected to the bus system, repeat the procedure described in "Initial start-up".Then activate the app mode, see "App mode with iNet Box"
The time switch is disabled in app mode

Menu control

1. Display
2. Status bar
3. Menu bar (top)
4. Menu bar (bottom)

5. 230 V power supply indicator (mains electricity)
6. Time switch indicator
7. Settings / values ("displayed text")
8. Rotary push button
9. Back button

Selecting a menu item

The backlit screen shows the menu level The first icon flashes

Use the rotary push button to select menus in the menu bar and make settings

Symbol	Menu item
	Setting the room temperature
	Selecting the hot water level
	Selecting the energy type
	Selecting the fan level
	Setting the time switch
	Switching lighting on / off
	Error message
	Setting the time
	Service menu

Setting a parameter

The backlit screen shows the setting level. The operating parameters of the selected menu item are shown in "Settings / values". Use the rotary push button to select and change setpoint and parameters; press the button to save these. Selected menu items flash.

Exiting the menu and/or settings level

Press the Back button

• Go back from a menu
• Go back from the setting levThe backlit screen shows the setting level The operat-el and reject settings; in other ing parameters of the selected menu item are shown in words, the previous values remain "Settings / values" Use the rotary push button to select unchanged

* Available only with some air conditioning systems

Room temperature in automatic climate control mode (AUTO)

Symbol	Displayed text	Description
	AUTO (ACC)	Automatic climate control is switched on

Appliance
C = Truma CP plus
F = CP plus CI-BUS
A = Air conditioning system
H = Heater
T = Truma iNet Box

Default setting (RESET)
The reset function resets the CP plus to the default setting This deletes all settings Newly connected appliances are detected and stored in the Truma CP plus

• Switch on the power supply, 12 V for Truma CP plus and Combi and 230 V for an air conditioning system and Combi E

Reset

• Select "RESET" with the rotary push button
• Press the rotary push button
• "PR SET" is displayed
• Press the rotary push button to confirm

After confirmation, the CP plus initialises itself "INIT " appears on the display while this is in progress

Special displays

230 V power supply available
The symbol indicates that a 230 V power supply (mains electricity) is available on the connected heater and/or air conditioning system

Truma App with iNet Box
When a command is sent via the Truma App from a mobile device, "APP" is displayed

Infrared (IR) remote control (air conditioning system)
When a command is sent via the infrared remote control of the air conditioning system, "IR" is displayed

External control panel (CI-BUS)
When a command is sent via an external control panel with CI-BUS, "CI" is displayed
The CP plus CI BUS is a separate variant that is equipped only in the factory

Warning

indicates that an operating parameter has reached an undefined state In this case the appliance concerned continues to operate When the operating parameter is within the target range again, this symbol goes off again automatically

Reading out the warning code

• Select the icon with the rotary push button
• Press the rotary push button
  The current warning code will be displayed Use the troubleshooting guide to determine and rectify the cause of the warning
  
  W = Warning
  42 = Fault code
  H = Appliance
  H = Heater
  A = Air conditioning system

Cause eliminated / return to the setting level

• Press the rotary push button

Cause not eliminated / return to the setting level

• Press the Back button

In this case, the warning is not acknowledged in the CP plus and the warning symbol remains The affected appliance remains in warning status Other connected appliances can be operated

Malfunction

In the event of a malfunction, the CP plus immediately goes to the "Malfunction" menu level and displays the relevant fault code Use the troubleshooting guide to determine and rectify the cause of the malfunction

E = Malfunction
112 = Fault code
H = Appliance
H = Heater
A = Air conditioning system

Cause eliminated / return to the setting level

• Press the rotary push button If the display is in stand-by mode, press to activate the background lighting and press again to acknowledge the malfunction
• The respective appliance is restarted

This can take several minutes due to the internal after-runs of connected devices
If the cause has not been remedied, the malfunction will occur again and the CP plus will go to the "Malfunction" menu level again
If the fault code flashes in the control panel display, this cannot be reset until up to 15 minutes have elapsed

Cause not eliminated / return to the setting level

• Press the Back button

In this case, the malfunction is not acknowledged in the CP plus and the warning symbol remains The appliance remains in malfunction state Other connected appliances can be operated

Maintenance

The CP plus requires no maintenance Use a damp, non-scouring cloth to clean the front panel If this is not sufficient, use a neutral soap solution

Technical data

Subject to technical changes

Troubleshooting guide

If these measures do not remedy the malfunction or if fault codes are displayed that you cannot find in the troubleshooting guide, contact Truma Service.

Heater Combi / Combi E (H)

Fault code	Cause	Remedy
W 17 H	Water overheat condition (woc)	Switch heater off and allow it to cool. Fill the water container with water
W 18 H	Air overheat condition
	Not all warm air ducts are connected	Make sure that all warm air ducts are connected to the heater
	Warm air outlets blocked	Check whether the warm air ducts are damaged or kinked
	Circulated air intake blocked	Remove the blockage in the circulated air intake and ensure that the installation space is sufficiently ventilated
W 24 H	Imminent low voltage / battery voltage too low < 10.4 V	Check the function with the motor running, check the power supply unit or other batteries. Charge battery and check contacts, replace old battery
E 29 H	Power consumption of the FrostControl heating element too high	Replace FrostControl heating element
W 42 H	Window switch detects open window	Close window above cowl
E 43 H	12 V power supply faulty (overvoltage)	Check the 12 V power supply at the appliance input under load; to test, disconnect the power supply unit and the solar system from the on-board power supply
W 45 H	230 V power supply faulty	Check the 230 V power supply at the appliance input
		Have an expert check the 230 V fuse and replace it if necessary
		Reset the 230 V overheating protection (see Combi operating instructions)
E 111 H	Fault in the electronics	Check the 12 V power supply at the appliance input under load; to test, disconnect the power supply unit and the solar system from the on-board power supply
E 112 H, E 121 H, E 122 H, E 202 H, E 211 H, E 212 H	Flame out or not detected, Flame unstable during operation, Gas supply interrupted	Check that the gas supply has the correct operating pressure (see Fault catalogue, gas supply)
E122H	Lack of fuel due to low tank level, tank is empty and / or vehicle is on a slope	Fill tank with fuel and then fill the fuel line (see operating instructions / initial start-up)
W 255 H	Heater has no 12 V power supply	Check the 12 V power supply at the appliance input; to test, disconnect the power supply unit and the solar system from the on-board power supply
	No connection between heater and control panel	Check the control panel cable and make sure there is connection between the heater and the control panel
W 301 H, W 417 H	12 V power supply faulty (overvoltage)	Check the 12 V power supply at the appliance input; to test, disconnect the power supply unit and the solar system from the on-board power supply
W 302 H, W 418 H	12 V power supply faulty (low voltage)	Charge battery and check contacts, replace old battery
W 303 H, W 411 H	Risk of low voltage. Battery voltage too low < 10.4 V	Check the function with the motor running, check the power supply unit or other batteries. Charge battery and check contacts, replace old battery
W 401 H	Hot water mode with empty water container	Switch heater off and allow it to cool. Fill the water container with water
W 402 H	Air overheat condition
	Not all warm air ducts are connected	Make sure that all warm air ducts are connected to the heater
	Warm air outlets blocked	Check whether the warm air ducts are damaged or kinked
	Circulated air intake blocked	Remove the blockage in the circulated air intake and ensure that the installation space is sufficiently ventilated
W 407 H	230 V power supply faulty	Check the 230 V power supply at the appliance input
		Have an expert check the 230 V 10 AF, H fuse and replace it if necessary
W 408 H	Gas supply interrupted in mixed mode	Check that the gas supply has the correct operating pressure. Start the heater in gas mode, acknowledge the fault and switch to mixed mode
W 412 H	Window switch detects open window	Close window above cowl
E 507 H, E 516 H, E 517 H	Gas supply interrupted	Check that the gas supply has the correct operating pressure (see Fault catalogue, gas supply)
E 607 H	Maximum number of fault resets reached / after more	Wait 15 minutes and reset fault
E 621 H	than 4 resets within 15 minutes, the heater is blocked Room temperature sensor or cable faulty	Check the cable for the room temperature sensor and plug connections Replace the room temperature sensor
E 624 H	FrostControl heating element has a short circuit	Replace FrostControl heating element
E 632 H	230 V overheating protection has triggered	Reset the 230 V overheating protection (see Combi operating instructions)

Heater Combi D / Combi D E (H)

Safety instructions

General safety

• Read and closely follow safety instructions to prevent risks and damage for people and property
• Read and observe the operating instructions and supporting documents for the appliances, such as gas supply, heater, air conditioning system and the vehicle carefully and keep them in a safe place for subsequent use
• Observe local laws, guidelines and standards associated with the use and operation of the device

Safety instructions for the control panel

• The CP plus must not be operated unless it is in technically perfect condition
• Repairs must be carried out immediately Do not attempt to rectify malfunctions yourself unless this is described in the troubleshooting guide of these instructions
• Do not repair or modify the CP plus
• A faulty CP plus may be repaired only by the manufacturer or the manufacturer's service department
• Never use LP gas appliances when refuelling, in multi-storey car parks, in garages or on ferries Switch off the CP plus to prevent the heater being switched back on by the Truma App or the time switch (see "Switching on/off")

Obligations of the operator/ / vehicle owner

• Make sure that the appliance can be operated properly in all operating phases

Installation, dismantling, repositioning

Only competent, trained personnel (experts) may install and repair the Truma product and carry out the function check with consideration of the installation and operating instructions and the current recognised rules of engineering Skilled personnel refers to persons who are capable of properly carrying out the necessary work and recognising possible hazards based on their specialist training and education, their knowledge and experience with Truma products and the relevant standards
For experts only
Do not install, dismantle or reposition the device on your own.

• Have the device installed, dismantled or repositioned only by an expert

Important notes

• If the power supply to the system has been interrupted, the time / time switch must be reset
• When a new or replacement appliance (heater, air conditioning system or Truma iNet Box) is connected to the bus system, repeat the procedure described in
• "Initial start-up"
• If a Combi heater is connected to the CP plus, you can no longer use the time switch ZUCB