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Autoterm Planar Digital Comfort Controller for Air and Water Heaters - 0050

Part Number: AT0050
  • $115.07 (ex. VAT)
  • (Delivery from $5.44 (ex. VAT) )
Item out of Stock | Usually dispatched within 24 hours

Autoterm Planar Digital Comfort Controller for Air and Water Heaters

Key Features

  • Intuitive user interface
  • LED status display
  • Thermostat function
  • Additional heating options
  • Quick access button for heating
  • Vehicle battery safety function
  • Heater maintenance reminder
  • Precise integrated digital temperature sensor

AUTOTERM heater compatibility

Air heaters:


Water heaters:

  • AUTOTERM Flow 5D / 5B
  • AUTOTERM Flow 14D

12V and 24V

Heating modes for air heaters

TEMPERATURE MODE: Heater will maintain set temperature by reducing the heating power, without shutting off the combustion process.

POWER MODE: Heater will operate constantly at set power level.

HEAT + VENTILATION: Heater will operate till the temperature is reached 1°C above the set temperature, shut off the combustion process and start to ventilate till the temperature drops 5°C below the set temperature. When temperature drops, heating starts again.

THERMOSTAT MODE: Heater will operate till the specified temperature is reached then shuts off the combustion process and ventilation. After the temperature drops by specified degrees heating will start again.

Heating modes for water heaters

PRE-HEATING MODE: Heater will operate till the certain coolant temperature is reached then shuts off the combustion process. After the temperature of the coolant drops heating will start again.

ECO MODE: (only for FLOW 14D) Pre-heating mode with reduced power and fuel consumption. Temperature of the coolant is reached slower than in “Pre-heating mode.”

THERMOSTAT MODE: (only for Flow 5) Heater will operate till the specified interior temperature is reached then shuts off the combustion process. After the temperature drops by specified degrees heating will start again. Temperature is read by control panel.

*for setting up “Thermostat mode” see instructions for AIR heaters.

Temperature sensor: Custom calibrated digital sensor with +/- 1.5 degree offset.


  • 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

Status display:

  • LED red - heating
  • LED blue - ventilation
  • LED green - shutting down
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.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
Display dimensions: 37mm x 20mm
Control panel dimensions: 82mm x 37mm x 19mm


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Please Note: Delivery prices quoted are excluding VAT.

UK Postage Table

Deliveries are made from Monday to Friday excluding Bank and National  Holidays.

Next Working Day Shipping * is available in UK Mainland for all orders placed before 15:00hrs. Orders placed after 15:00hrs will be dispatched the following working day on a next day service.

Orders placed on a Saturday or Sunday will be despatched the following Monday (except Bank Holidays) for expected delivery following business day (Tuesday)

For Next Business Day Delivery, please use the drop down menu under Shipping Options and select Next Day.

Standard 2-day shipping * is available to Scottish Highlands and Islands orders placed before 15:00hrs on stocked items. Items are despatched promptly sameday. UK Courier services are typically 2 day delivery for remote UK postcodes

WEEKEND deliveries in the UK may be possible if required at additional cost. For WEEKEND delivery quotation please call our Sales Team prior * 

Standard carriage / Free-shipping - please allow 2-5 working days from clearance of payment for delivery. Typically however delivery is much quicker and 98% of orders are delivered to UK addresses within 24 - 48 hours after dispatch from warehouse.

Delivery Times - Deliveries are made Monday to Friday (excl. public holidays) typically 2-5 working days from date of order for in-stock items if the FREE DELIVERY option is chosen. An email will be sent to inform you of dispatch of goods and due delivery date.  Next Day UK delivery may be selected at checkout for an additional cost.

Free worldwide delivery will not be available if one of the following is applicable to your order;

·         Your order has a total weight exceeding 18kgs

·         You already have a discount code applied to your order

·         Your basket contains a special order item that requires shipping additionally.

CANCELLATIONS and RETURNS - from our Online shop

(not including manufacturer warrantable items. Please speak to our Sales department or email if you believe your item has failed within warrantable circumstances)

You have the right to cancel your order within a 14 (fourteen) day "cooling off period", which starts the day after you receive your items.

If you wish to cancel under the UK Consumer Protections (Distance selling) Regulations 2000, you must inform ButlerBus Technik Ltd of your intention to cancel your order by either phone, email or post within the 14 (fourteen) day cooling off period.

You will then receive confirmation from ButlerBus Technik Ltd and given authorisation to return goods, please quote and include your original invoice number. We will only except goods back in a re-saleable condition.

Once we have received goods we will then issue you a full refund less any delivery charges. (You will be required to return goods at your cost by an insured and trackable method) If goods go missing we will only consider a

request for refund on proof of completed receipt/delivery of goods to ButlerTechnik from your nominated courier.

If you are unable to arrange a return please contact us. We can arrange collection on your behalf but a charge will be made which will be deducted from your refund total.

If a delivery charge was made on the original purchase this will not be refunded as this is a service which is concluded at the point of order. 

Orders that have already been processed and/or despatched cannot be cancelled; they must be returned to ButlerBus Technik Ltd for refund following receipt of goods by customer.

We will do our very best to assist and enable a quick refund process upon receipt of returned items.

Thank you for your continued understanding during this process

Returns address
ButlerBus Technik Ltd
Tillbridge Road Garage
United Kingdom

All costs relating to return shipping of correctly supplied goods shall be the responsibility of the purchaser.

ButlerBus Technik Ltd are not responsible for any shipping or insurance charges relating to return of goods. 

Please be aware that ButlerBus Technik Ltd may NOT be able to accept for full or partial refund/credit any items that have been prior installed by the customer before return.

Such goods/components shall be deemed 'used' and therefore unable for subsequent resale.

Specifically, but not exclusively, the return of prior installed electronic items used for purchaser diagnostic or trouble-shooting purposes shall not be considered for full refund. 

The decision to refund or partially refund prior installed items shall remain solely at the discretion of ButlerBus Technik Ltd.

The decision to refund or partially refund goods returned beyond 14 days after original date of sale shall remain solely at the discretion of ButlerBus Technik Ltd.

Your statutory rights are unaffected by the above. Consumers other than Business trade customers are further protected by

UK Consumer Protection (Distance Selling) Regulations 2000 

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