The pLDPRO HMI display range has been widely used across HVAC control systems, providing operators and engineers with a practical local interface for monitoring and interacting with controllers.
However, following notification from CAREL regarding the phase-out of the pLDPRO family, these displays are no longer available as of mid-2026. The manufacturer has recommended migration towards alternative display ranges for future requirements.
For building operators, HVAC engineers and maintenance teams with existing pLDPRO displays, this naturally creates an important question:
What should you use when an existing pLDPRO needs replacing?
For many HVAC applications, the pGDn display range provides a suitable replacement route, offering equivalent functionality and a straightforward transition from existing pLDPRO installations.
There is, however, an important physical difference to consider: the pGDn has a slightly larger footprint than the pLDPRO.
At iACS, we can help identify the pLD display currently installed, determine the appropriate replacement and supply suitable replacement displays for all affected pLD types.
What This Blog Covers
This guide explains:
What the pLDPRO phase-out means for existing installations
Which pLDPRO display types are affected
How the pGDn replacement compares with the pLDPRO
The physical size difference you need to consider
What to do if you have a different or customised pLD display
How iACS can identify and supply suitable replacements
Table of Contents
What Is Happening to the pLDPRO Display Range?
Do Existing pLDPRO Systems Need to Be Replaced?
Which pLDPRO Displays Are Affected?
What Is the Replacement for a pLDPRO Display?
pLDPRO vs pGDn: What Is Different?
What About Other pLD Display Types?
How iACS Can Support Your pLDPRO Replacement
pLDPRO Replacement FAQs
Conclusion
1. What Is Happening to the pLDPRO Display Range?
The pLDPRO family is an established range of Human Machine Interfaces (HMIs) used with electronic control systems.
These displays have been used across numerous HVAC applications to provide a local interface between the control system and the operator.
Following the manufacturer's announcement that the product family is being phased out, pLDPRO products are no longer available as of mid-2026. The documentation identifies the ageing product family and obsolescence of components as reasons behind the change.
For existing users, this does not mean that an operational pLDPRO display suddenly needs to be removed.
Instead, it means that building operators and maintenance teams should understand the available replacement options so that an appropriate alternative can be sourced when required.
iACS will remain available to support customers with queries relating to existing pLDPRO installations going forward.
2. Do Existing pLDPRO Systems Need to Be Replaced?
If your existing pLDPRO is functioning correctly, the phase-out does not itself mean that it needs to be immediately replaced.
The more important consideration is future maintenance.
If a display becomes:
damaged
faulty
unreliable
unsuitable for a refurbishment
required as part of a controls repair
sourcing another pLDPRO is no longer the appropriate long-term replacement strategy.
Instead, the installed display should be identified and matched with a suitable alternative.
For HVAC applications, the pGDn range provides the primary replacement route identified for many pLDPRO variants.
This enables existing systems to continue operating without requiring an unnecessary wholesale replacement of the controls system simply because the HMI is obsolete.
3. Which pLDPRO Displays Are Affected?
The phase-out covers the pLDPRO family, including a range of standard, panel-mounted and customised versions.
Some of the affected standard part numbers include:
pLD Part Number | Description |
PLD00GF700 | pLDPRO with buzzer, standard tLAN/pLAN, single package |
PLD00GF701 | pLDPRO with buzzer, standard tLAN/pLAN |
PLD00GFP00 | pLDPRO 132 × 64, buzzer, pLAN connection |
PLD00GFP01 | pLDPRO 132 × 64, buzzer, pLAN connection |
PLD00LF400 | pLD large panel mounting |
PLD00SF400 | pLD small panel mounting |
PLD01GFP00 | pLDPRO 132 × 64, buzzer, pLAN connection, neutral |
PLD01SF400 | pLD small panel mounting, neutral |
PLDH0SF400 | pLD small for HEOS |
PLDH0SF4F0 | pLD small for HEOS |
The documentation also identifies several customised pLD variants.
The important point for customers is that you do not need to determine the replacement yourself.
If you provide iACS with the existing part number - or suitable information about the display and application - our team can help identify the appropriate replacement.
4. What Is the Replacement for a pLDPRO Display?
For HVAC applications, the pGDn range has been identified as the suggested replacement for pLDPRO displays.
The key replacement options identified for many of the affected displays are:
PGD1000F01 - without buzzer
PGD1000FZ1 - with buzzer
From an operational perspective, this makes migration considerably easier.
For the applicable pLDPRO variants, the pGDn provides the equivalent functionality and is intended as a pin-to-pin, like-for-like replacement.
In practical terms, that means the replacement can work as a plug-and-play alternative electrically and functionally, rather than requiring the existing controls strategy to be completely redesigned.
There is, however, one important consideration.
The physical dimensions are different.
The pGDn has a slightly larger physical footprint than the pLDPRO.
This needs to be considered when replacing a display mounted within:
a control panel door
an enclosure
a fascia
another restricted mounting position
Therefore, while the electrical and functional replacement can be straightforward, the existing panel cut-out or mounting arrangement should be checked before installation.
5. pLDPRO vs pGDn: What Is Different?
For customers replacing an applicable pLDPRO with a pGDn, the important distinction is between functional compatibility and physical dimensions.
Consideration | pLDPRO → pGDn replacement |
Functionality | Equivalent replacement functionality |
Electrical connection | Pin-to-pin replacement |
Controls compatibility | Like-for-like replacement for applicable HVAC versions |
Installation approach | Designed to provide a straightforward replacement route |
Physical footprint | pGDn is slightly larger |
Panel mounting | Existing mounting/cut-out should be checked |
This makes the pGDn a practical solution for customers who need to maintain an existing controls installation without unnecessarily replacing the wider system.
The main consideration for engineers is therefore not reprogramming the entire controls system, but making sure the larger pGDn can be accommodated physically.
6. What About Other pLD Display Types?
Not every pLD installation is identical.
Alongside the standard pLDPRO models, the phase-out documentation includes:
panel-mounted versions
neutral versions
customised displays
HEOS-specific displays
There are also application-specific considerations. For example, the manufacturer's documentation directs certain HEOS versions towards HEOS PRO rather than the standard pGDn replacement route.
This is why identifying the exact existing display matters.
Rather than assuming every pLD display requires the same replacement, iACS can review the existing part number and application to establish the suitable option.
iACS can identify and supply suitable replacements across the affected pLD range.
If you are unsure what is currently installed, speak to our team before ordering.
7. How iACS Can Support Your pLDPRO Replacement
For customers with pLDPRO displays already installed, the most useful first step is identifying exactly what you have.
iACS can support customers by:
identifying existing pLD and pLDPRO models
checking the application
identifying an appropriate replacement
supplying suitable pGDn displays where applicable
advising on alternative replacements for other pLD variants
helping customers understand the physical mounting considerations associated with moving to pGDn
This is particularly useful for facilities teams, HVAC contractors and OEMs maintaining multiple systems where different pLD variants may be installed across a site or equipment portfolio.
And support does not end with the phase-out.
iACS will remain on hand for pLDPRO-related enquiries and replacement support going forward.
8. pLDPRO Replacement FAQs
Is the pLDPRO display still available?
The pLDPRO family has been phased out and is no longer available as of mid-2026. Customers with existing installations should therefore consider the appropriate replacement when a display needs changing.
What replaces the pLDPRO for HVAC applications?
For many HVAC applications, the pGDn range is the suggested replacement. The identified options include PGD1000F01 without a buzzer and PGD1000FZ1 with a buzzer.
Is the pGDn a direct replacement for pLDPRO?
For the applicable variants, the pGDn provides equivalent functionality and a pin-to-pin, like-for-like replacement route. The key difference is its slightly larger physical footprint, which means the mounting arrangement should be checked.
Will I need to replace my complete HVAC controls system?
Not simply because a compatible pLDPRO display needs replacing. Where the applicable pGDn is suitable, it provides a straightforward replacement route without replacing the wider controls system.
Is the pGDn the same physical size as pLDPRO?
No. The pGDn has a slightly larger footprint. This is the main practical difference that needs to be considered during replacement.
What if I have a different pLD model?
Contact iACS with the part number from your existing display. We can identify and supply suitable replacements across the affected pLD range.
Can iACS help if I don't know the exact replacement?
Yes. Send us the existing pLD part number and application information, and our team can help determine the suitable replacement.
Conclusion: Planning Your pLDPRO Replacement
The phase-out of the pLDPRO does not need to create unnecessary complexity for existing HVAC installations.
For many applications, the transition to pGDn provides a straightforward replacement route, retaining equivalent functionality and pin-to-pin compatibility.
The key consideration is physical:
The pGDn has a slightly larger footprint than the pLDPRO, so the existing mounting arrangement should be checked before replacement.
For other pLD variants and application-specific displays, the replacement route may differ.
That is where iACS can help.
Our team can identify your existing pLD display, establish the appropriate alternative and supply the suitable replacement - helping you keep existing HVAC controls operational without unnecessary disruption.
Need a replacement for a pLDPRO or another pLD display?
Contact iACS with your existing part number and application details and our HVAC controls team can help identify the correct replacement.
You can also explore the iACS HVAC controls and components store for replacement displays and HVAC control products.