Controller for Diesel Air Heater
OPERATE AND CONTROL YOUR AUTOTERM DIESEL AIR HEATERS AND FLOW SERIES HEATERS WITH EASE!
CHOOSE BETWEEN THE SIMPLE PU-5, THE ADVANCED PU-28 OR THE NEW COMFORT CONTROL!
PU-5 | SIMPLE CONTROL
This control panel provides a convenient and straightforward solution for managing AUTOTERM Air heaters. Designed with a single rotary knob, this user-friendly panel allows to adjust settings effortlessly.
>> For Air Heaters only | Various Workmodes
Workmodes with Autoterm Air Series heaters:
Note: The workmodes change, depending on whether an External Temperature Sensor (Assy: 1458 or AT4-0017-AA0) is connected to the heater!
No Temperature Sensor:
- Power Mode (The heater will operate constantly at a set power level.)
- Ventilation Mode (Ensures efficient air circulation without activating the heating function.)
Temperature Sensor Connected:
- Temperature Mode (The heater will maintain a set temperature by reducing the heating power. When the temperature is above the setpoint, combustion will switch off.)
- Heat + Ventilation Mode (The heater runs until the temperature reaches 1°C above the set point, then shuts off and ventilates until it drops 2°C below, before resuming to heat.)
- Ventilation Mode (Ensures efficient air circulation without activating the heating function.)
PU-28 | ADVANCED TOUCH CONTROL
Take full command of any AUTOTERM heater with the Comfort Touch Control Panel - designed with a bright, easy-to-navigate 2.8” touchscreen.
Possibility to set multiple workmodes and advanced timers on all Autoterm Air Series heaters or Flow Series heaters..
>> Touchscreen Control | Multiple Languages | Advanced Timers
Workmodes with Autoterm Air Series heaters:
- Temperature Mode (The heater will maintain a set temperature by reducing the heating power. When the temperature is above the setpoint, combustion will switch off.)
- Power Mode (The heater will operate constantly at a set power level.)
- Heat + Ventilation (The heater runs until the temperature reaches 1°C above the set point, then shuts off and ventilates until it drops 2°C below, before resuming to heat.)
Workmodes with Autoterm Flow Series:
- Pre-Heating Mode (The heater runs until the coolant reaches a set temperature, then shuts off the combustion process. Heating resumes when the coolant temperature drops.)
- Thermostat Mode (The heater runs until the set temperature is reached, then shuts off and restarts heating when the temperature drops.)
Designed to elevate the experience
- Intuitive touchscreen The display allows easy monitoring of the current temperature, adjusting heating settings, setting timers, and much more.
- Integrated digital temperature sensor The digital temperature sensor offers accurate, real-time monitoring, ensuring your heater maintains the perfect temperature for maximum efficiency.
- LED status display Get instant feedback on your heater's performance with the bright and clear LED screen.
- Multiple heating modes Customize comfort with multiple heating modes, tailored to suit various needs and conditions.
- Multiple languages The Touch Control Panel supports multiple languages, including EN, RU, CZ, FI, SP, PL, NL, DE, FR, IT, and JP, making it easy to use for a wide range of users across different regions.
Scheduled comfort with Multiple Timers
Effortlessly manage your heating schedule with our intuitive Comfort Control Panel timers. Designed for maximum flexibility and convenience, the timer system lets you customize your heating needs with precision.
- Heating Mode Options: Choose a specific heating mode for each timer to suit your preferences.
- Set up to 3 Timers simultaneously: Schedule up to three independent timers to match your daily routine.
- Continuous Functionality: Once set, a timer remains active continuously until it's disabled, so you never have to worry about resetting schedules.
COMFORT CONTROL
Take full control of your AUTOTERM heater system with the Comfort Control Panel — engineered for precise operation, intuitive navigation, and reliable performance in any environment.
Designed as the latest evolution of AUTOTERM / Planar control units, this upgraded interface delivers enhanced functionality, improved usability, and expanded control over both Air and Flow Series heaters. Compatible with 12V and 24V systems, it integrates seamlessly into camper vans, expedition vehicles, and off-grid builds.
>> Advanced Control | Multi-Mode Operation | Integrated Timers
Workmodes with Autoterm Air Series heaters:
Power Mode - Delivers continuous heating at a fixed output level, regardless of surrounding temperature conditions.
- Heat + Ventilation Mode - Heats until the set temperature is slightly exceeded, then switches to ventilation mode until temperature drops, automatically resuming heating as needed.
- Temperature Mode - Maintains a consistent ambient temperature by automatically adjusting heating power without interrupting combustion.
- Thermostat Mode - Runs the heater until the desired temperature is reached, then cycles between standby and ventilation to maintain consistent comfort levels.
Workmodes with Autoterm Flow Series:
- Pre-Heating Mode - Operates until coolant reaches a predefined temperature, then pauses combustion and resumes as temperatures drop.
- Thermostat Mode - Maintains coolant or system temperature by automatically cycling the heater on and off based on temperature thresholds.
Designed to elevate the experience
- Intuitive rotary control with display - A multifunctional control knob combined with a clear, backlit display enables fast, precise adjustments and seamless menu navigation.
- Compact, installation-friendly design - With a slim footprint (82 × 37 × 19 mm), the control panel integrates cleanly into any vehicle interior without compromising accessibility or aesthetics.
- Real-time system monitoring - View temperature, operating mode, timers, and power supply voltage directly from the display for full system awareness at a glance.
- Voltage monitoring protection - Built-in battery protection automatically shuts down the heater when voltage drops below a user-defined threshold, helping prevent deep discharge and system damage.
- Modern interface & improved usability - Upgraded from previous models with a refined control layout, quick-access buttons, and simplified operation for everyday use.
- Multi-language support - Expanded language options improve accessibility and usability across a wide range of users and regions.
Scheduled comfort with Multiple Timers
Take control of your heating schedule with flexible, built-in timer functionality designed for real-world travel and daily use.
Set up to 3 Timers simultaneously
Program multiple heating schedules tailored to your routine or trip demands.
Flexible scheduling options
Configure timers by time, duration, and day selection — including daily, weekday, or custom schedules.
Continuous operation control
Timers remain active until manually changed, ensuring consistent comfort without repeated setup.
PU-5 Specifications
“Power mode” (If the external sensor is not connected) Designed for quickest possible heating of the space;The heater operates continuously at a set power.
“Temperature mode” (If the external sensor is connected) Heat output decreases as the difference between the desired temperature and the temperature in the space decreases.
* The temperature mode for Air 2D 12/24V and 4D 12/24V heaters in the 6355, 6350, 6260, and 6265 series versions have a new algorithm. In this mode, the heater acts normally by lowering power when it gets near the set temperature. However, if it goes past the temperature setpoint, the heater will turn off and wait until the temperature drops by 3 degrees below temperature setpoint before starting again
“Ventilation mode” Designed for air circulation in the space.
Ventilation during heating” - function (If the external sensor is connected) Designed to maintain the required temperature in the space;After the required temperature is reached, the space heating is stopped and space air circulation is performed;Controls the space temperature; if the temperature drops below the set point, the heater will start in Ventilation mode.
Dimensions: 50x36 x18mm
* Please note, that AUTOTERM air heaters with production date 16.11.2016 or older does not support Ventilation mode. You can check your air heaters AUTOTERM production date on the warranty card.
** Please note, that all AUTOTERM air heaters need external temperature sensor (assy.1458), so that the "Power mode" and "Ventilation during heating” function would work.
PU-28 Specifications
Temperature sensor Custom calibrated digital sensor with +/- 1.5 degree offset.
Timers Max - 3 timers. Heating mode can be chosen for each timer. All 3 timers can be active simultaneously. Set timer is active continuously till disabled | Available cycles: ED - Every day EW - Every workday Custom days
Wiring compatibility:
- assy.2067 - Wiring for control panel (1.8 m);
- assy.2324 - Wiring for control panel (5.0 m);
- assy.3298 - Wiring for control panel (7.0 m);
- assy.4269 - Extension wiring for control panel (2.6 m);
- assy.4111 - Extension wiring for control panel (3 m);
- assy.2468 - Extension wiring for control panel (5 m);
- assy.4366 - Cable wiring for AUTOTERM Flow 5D (12V);
- assy.4044 - Cable wiring for AUTOTERM Flow 5D / 5B (12V);
- assy.4394 - AUTOTERM Flow 14D wiring harness for control panel (1.8 m).
Maximum allowed cable wiring length with Comfort Control 10 m
Compatibility with Air Heaters: AUTOTERM Air 2D; AUTOTERM Air 4D; AUTOTERM Air 9D; Travel Box 2.0.
Compatibility with Liquid Heaters: AUTOTERM Flow 5D / 5B; AUTOTERM Flow 14D.
(for verification of compatibility for older heaters sold by AUTOTERM, please contact us)
Control panel dimensions 77x67x14 mm
Comfort Control Specifications
Heating modes for Air heaters
- Power Mode: The default heating mode. The heater operates continuously at a set power level.
- Temperature Mode: Designed to maintain a set ambient temperature by automatically adjusting heat output as the desired temperature is reached.
- Heat + Ventilation Mode: The heater operates until the temperature slightly exceeds the setpoint, then switches to ventilation mode. Heating resumes once the temperature drops below the threshold.
- Thermostat Mode: The heater cycles on and off to maintain a consistent cabin temperature.
Heating modes for Liquid heaters
- Pre-Heating Mode: The heater operates until the coolant reaches a defined temperature, then stops combustion. Heating resumes when coolant temperature drops.
- Thermostat Mode: Automatically maintains system temperature by cycling the heater on and off.
Temperature sensor
Integrated digital temperature sensor for accurate, real-time monitoring and stable temperature control.
Display & interface
Backlit LCD display with multifunction rotary control for intuitive navigation and system monitoring.
Voltage monitoring
Built-in battery protection system with adjustable low-voltage cutoff to prevent excessive battery discharge.
Timer functionality
- Up to 3 programmable timers
- Configurable by time, duration, and schedule
- Continuous operation until manually adjusted
Wiring compatibility
Compatible with AUTOTERM control panel wiring harnesses and extensions:
- assy.2067 – Control panel wiring (1.8 m)
- assy.2324 – Control panel wiring (5.0 m)
- assy.3298 – Control panel wiring (7.0 m)
- assy.4269 – Extension wiring (2.6 m)
- assy.4111 – Extension wiring (3.0 m)
- assy.2468 – Extension wiring (5.0 m)
- assy.4366 – Wiring for AUTOTERM Flow 5D (12V)
- assy.4044 – Wiring for AUTOTERM Flow 5D / 5B (12V)
- assy.4394 – Wiring harness for AUTOTERM Flow 14D (1.8 m)
Maximum cable length: 10 m
AUTOTERM heater compatibility
Air heaters:
- AUTOTERM Air 2D
- AUTOTERM Air 4D
- AUTOTERM Air 9D
Liquid heaters:
- AUTOTERM Flow 5D / 5B
- AUTOTERM Flow 14D
(For compatibility with older AUTOTERM models, verification is recommended.)
Dimensions
Panel size: approx. 82 × 37 × 19 mm