This forum has been designed as a Technical Support Hub for frequently asked questions we receive on the Air Handling products we supply.

Along with tutorials on navigating through our iSmart Air Handling Unit Software, this forum is home to troubleshooting guides for products such as CAREL, Belimo, Titan, Axio, Sontay and many more. Please get in touch if you have a query that you haven't found an answer to below. 




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On 8/22/17, 6:28 AM

Unfortunately, PCOB, PCOC Macroplus and a few other controllers manufactred by Carel in the past decade, have been phased out and are no longer in production. Carel has launched a number of Programmable controllers through the recent years (PCO2, PCO3 and now the PCO5 range) that have been used by the Chiller and Heat Pump manufacturers in replacement of the old models. 

The replacement may not be straight forward in some cases… there are many considerations to be made before confirming the compatibility of the new replacement technology. Some of these considerations are:

  1. Find a suitable standard software capable of managing the Unit to be retrofitted.
  2. Evaluation if new sensors and/or transducers may be required 
  3. Evaluation if other controls options may also need replacement such as User Interface, tranformers etc.
  4. Wirings modifications in the electrical panel applied to the new controller.

The first thing to do, is to identify exactly the configuration of the unit (e.g. Type of unit, number of circuits, compressor types, condensation typology etc, inputs and outputs of the existing controller...). With these information it will be easier to identify a new possible standard software suitable for the unit. Once this assesment is done, it is only a matter of refine the new list of components needed for the replacement (including the controller model).

You can view all the available Carel Standard software application HERE

Should you need help or desire to receive a quote for the replacement and retrofit the existing PCOB, PCOC or Macroplus controller, do not hesitate contacting us. We will be happy to provide you with support, advice and a quotation.

Keep Informed

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Asked: 8/10/17, 10:18 AM
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Last updated: 8/22/17, 6:28 AM