Hermann Micra 2 Honeywell PCB

The Honeywell Hermann Micra 2 PCB is the component that controls the ignition, burner modulation, pump, and safety features of the boiler. When it fails, the boiler may not start, become locked, or operate erratically. This board is compatible with models from the Hermann Micra 2 range, as well as with some models from the Hermann Habitat 2 range, among others. A technician must confirm through diagnosis whether it is necessary to replace the PCB when these symptoms occur to restore the normal operation of the boiler.

Type of part: PCBs (control boards)
Status: Refurbished
Catalogue reference: 0020038693
Warranty: 1 year

VAT included Stock · 4 units

Compatibility

Hermann boilers compatible with reference 0020038693

PCB with reference 0020038693. Six confirmed compatibilities: Habitat 2 23 E and Habitat 2 24 SE.

Proven compatibility

Boiler model	Family	Verification
Hermann Habitat 2 23 E	Hermann Habitat 2	Contrasted
Hermann Habitat 2 24 SE	Hermann Habitat 2	Contrasted
Hermann Habitat 2 28 SE	Hermann Habitat 2	Contrasted
Hermann Micra 2 23 E	Hermann Micra 2	Contrasted
Hermann Micra 2 24 SE	Hermann Micra 2	Contrasted
Hermann Micra 2 30 SE	Hermann Micra 2	Contrasted

Can't see your model or have questions? The printed reference takes precedence. How to check it · Send us a photo via WhatsApp.

Guide

How to check if the reference 0020038693 is the part for your boiler

The part reference, model, and equipment revision must be verified against the manufacturer's documentation.

Find the reference printed on the installed part and check whether it matches the catalogue reference 0020038693. If it is not visible, do not identify the part from its shape alone.
Check the full boiler model on its data plate and look for it in the model associations on this page.
Compare the connections and physical body with the original part before installation.
If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.

Diagnosis and fault codes

Symptoms that require diagnosis on the PCB 0020038693

The PCB controls the ignition, modulation, and safety features of the boiler. These are the typical symptoms and what to do:

Common symptoms and faults

01
The boiler does not turn on: there are no lights, no display, and no sound.
Cause: The PCB is not sending current to the other components.
Check the fuse and the power supply before considering that the PCB is faulty.
02
The boiler tries to ignite and shuts down quickly, repeating the process.
Cause: The PCB interrupts the ignition because it receives an incorrect signal from a sensor.
Check the pressure switch, the temperature sensor, and its wiring before blaming the PCB.
03
The remote control does not respond to the presses, as if the boiler does not recognize it.
Cause: A fault in the microprocessor of the PCB prevents processing the user's commands.
Turn off the main power for a couple of minutes and then turn it back on to rule out a temporary fault.
04
An error code appears on the display that does not clear when resetting.
Cause: The PCB keeps the safety lock while detecting the same anomaly.
Note the code and check the component indicated first before replacing the PCB.

Hermann fault codes that require diagnosis

Code	Fault	Technical checks
F.27	The boiler turns off and does not ignite.	The boiler has shut down due to a flame detection error. This may be due to moisture in the electronics of the PCB or a fault in the gas valve, which may be related to the PCB.
F.29	The boiler loses the flame during operation.	A flame loss has been detected. This may be due to an interruption in the gas supply or a fault in the PCB that prevents the correct detection of the flame.

These symptoms can have more than one cause. If your boiler displays a fault code, send it to us via WhatsApp along with a photo of the labeling, and we'll tell you if this is the part.

Technical data

Data sheet for the PCB Hermann 0020038693

Catalogue reference: 0020038693
Uniclima internal SKU: PLHMIC2
Brand: Hermann
Type of part: PCBs (control boards)
Units in stock: 4 units
Status: Refurbished
Warranty: 1 year
Shipping: Delivery time shown at checkout
Return: 14 days

Part data and available documentation

Contrast the label codes, PCB, and revision with the installed part; they are not necessarily equivalent references.

Manufacturer: Honeywell

Frequently Asked Questions

Frequently asked questions about the PCB 0020038693

For which models is the Hermann Micra 2 Honeywell PCB (Reference: PLHMIC2) compatible?

It is compatible with the following models: Habitat 2 23 E, Habitat 2 24 SE, Habitat 2 28 SE, Micra 2 23 E, Micra 2 24 SE, and Micra 2 30 SE.

Does the Hermann Micra 2 Honeywell PCB work for the Hermann Habitat 2 24 SE?

Yes, the Hermann Habitat 2 24 SE is on the list of compatible boilers.

Can I use the Hermann Micra 2 Honeywell PCB in the Hermann Micra 2 30 SE?

Yes, the Hermann Micra 2 30 SE is one of the compatible models.

What fault codes does the Hermann Micra 2 Honeywell PCB have?

There are no documented fault codes.

Is the reference PLHMIC2 the correct one for my boiler?

If your boiler is from the Hermann Habitat 2 or Hermann Micra 2 range and is on the list of compatible models, then the reference PLHMIC2 is the appropriate one.

How many models are compatible with the Hermann Micra 2 Honeywell PCB?

There are a total of 6 models confirmed as compatible.

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Hermann Micra 2 Honeywell PCB