Refurbished Honeywell PCBs (control boards)

Honeywell PCB 45.007.351-005 REV.A · Junkers ZW23-1AE23

Application to the exact variant pending confirmation. Plug-in board that controls the operation of the boiler. Lack of response with only the yellow power LED lit, an overvoltage, or a water inlet require checking the electronics; these indications do not confirm the fault of the PCB by themselves.

Type of part: PCBs (control boards)
Status: Refurbished
internal SKU: PLC213
Warranty: 1 year

VAT included Stock · 5 units

Compatibility

Honeywell compatible boilers

PCB. 0 verified compatibilities. There are 2 other models that we are still checking.

Models pending verification

These models are associated with this reference, but we have not finished verifying them yet, so we do not consider them compatibleIf your boiler is one of them, send us a photo of the part you are going to replace and we will verify it before you purchase.

Honeywell Junkers Euroline ZW/ZS 23-1 KE	Honeywell	Unconfirmed
Honeywell Junkers ZW23-1AE23	Honeywell	Unconfirmed

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 it is the part for your boiler

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

Look for the designation 45.007.351-005 REV.A (sometimes written as 45007351005) on the label and the marking CPCp G3 on the printed circuit board.
Check that it also includes the codes CM1004V04 and 00248 and the printed voltage 230 VAC · 50 Hz · 10 VA.
Do not confuse it with the 45.007.351-003 REV.A or the S4962CM1004V04 / Junkers 8708300212: without additional content confirmation, consider them the same.
Check that your boiler is a Junkers ZW23-1AE23, the model that has been registered.
if they match, call us at 911 17 77 77 with your boiler model and we will reserve it for you.

Diagnosis and fault codes

Symptoms that require diagnosis on the PCB

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 respond and only the yellow power LED is lit.
Cause: It is a case of a repair thread with this PCB; it asks if the power supply of the microcontroller has been checked.
02
R1 and R5 resistors burned after water ingress; resistors and varistor S10K275 burned after a voltage surge of 400 V.
Cause: It is clearly visible on the PCB; a repair wire associates it with 45.007.351-005 REV.A.
03
The boiler does not ignite and locks out, with the reset button pressed and the LED flashing 60 °C.
Cause: There is no flame signal at the ionization electrode.
Check the gas supply and press the reset button. If it occurs again, have a technician check it.
04
The boiler does not ignite. The reset button flashes every 2 seconds and the 75 °C indicator is flashing.
Cause: Ignition failure. The manual associates it with ionization and the PCB, which is also wet.
Have a technician check it, as they need to inspect the PCB and the ionization.
05
The boiler locks out without flame. The reset button flashes once per second and the 60 °C indicator is flashing.
Cause: There is no signal at the ionization electrode. It could be a dirty or worn electrode, or the gas valves.
Have a technician check it, as they need to inspect the ionization electrode and the solenoid valves.

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

Technical sheet: Honeywell PCB

Uniclima internal SKU: PLC213
Brand: Honeywell
Type of part: PCBs (control boards)
Units in stock: 5 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.

Marked tension: 230 VAC
Marked frequency: 50 Hz
Apparent power marked: 10 VA
Printed date: 09-SEP-2005
PCB marking: CPCp G3 / 94V-0
Inventory — Visible PCB marking: CPCp/CPCP G3
Inventory — Printed adjustments: 3 MIN; 5 SEC
Inventory — Application indicated in inventory: JUNKERS ZW23-1AE23
Inventory — Marked code: 00248
Additional data — Type of PCB: Plug-in control PCB
Additional data — Processor and memory: NEC F0134A (0603EP010) · Atmel 24C04AN EEPROM · Site (firmware dump)
Identification — Marked designation: 45.007.351-005 REV.A
Identification — Marked code: 45.007.351-005 REV.A
Identification — Marked code: CM1004V04
Technical sheet: Marked voltage: 230 VAC
Technical sheet: Marked frequency: 50 Hz
Technical sheet: Marked apparent power: 10 VA
Technical sheet: Printed date: 09-SEP-2005
Technical sheet: Marked PCB: CPCp G3 / 94V-0
Inventory data — Visible PCB marking: CPCp/CPCP G3
Inventory data — Printed adjustments: 3 MIN; 5 SEC
Inventory data — Application indicated in inventory: JUNKERS ZW23-1AE23
Inventory data — Marked code: 00248
Additional markings: Markings: revision REV.A; date 09-SEP-2005; PCB 94V-0; CPCp/CPCP G3; printed settings 3 MIN and 5 SEC; visible code CM1004V04; marked code 00248.
Pending applications to verify: JUNKERS ZW23-1AE23 — noted compatibility; pending confirmation by variant. Registered application: "Euroline" for the linked offer. Seller's commercial application, pending verification by parts breakdown and variant before assembly; does not confirm compatibility of this unit on its own.

Before purchasing

The symptoms come from repair forums, not from a manufacturer's manual: a technician should measure before declaring the PCB faulty.
To confirm: Junkers Euroline ZW/ZS 23-1 KE — 1 source: repair forum thread with PCB 45.007.351-005 REV.A
Do not confuse: 45.007.351-003 REV.A — Another Honeywell board that two forums mention for the Junkers 23-1 (one, for the Euroline ZW/ZS 23-1AE) — Ends in -003, not in -005; no forum states that it is the same board. One thread mentions that the 003 has the same 100 Ω resistors.
Do not confuse: S4962CM1004V04 · 8708300212 — Honeywell PCB that is provided for the ZW23-1AE23 with the Junkers code 8708300212 (8 708 300 212 0 in the official list) — without additional content confirmation, it links to the 45.007.351-005 REV.A, even though it ends like your CM1004V04: compare.
The address of the gasket sheet 45-007-351-006 with 87083002120; its text does not explain it. Without additional content confirmation, do not link 45.007.351-005 with 8708300212 or with S4962CM1004V04: compare the marking on your PCB.
Join the 45.007.351-005 REV.A with Junkers (and monitor..ws, with the Euroline); confirm designation and type. None mentions the ZW23-1AE23: confirm it. Notices: the URL says 006 and the processor sticker varies between.
Pending registered applications to confirm by model, variant, or programming: Junkers ZW23-1AE23.

Frequently Asked Questions

Frequently asked questions about the PCB (control board)

How do I identify the Honeywell 45.007.351-005 REV.A PCB?

Look for the designation 45.007.351-005 REV.A on the PCB (sometimes written as 45007351005). Compare the CPCp G3 marking on the circuit, the CM1004V04 and 00248 codes, and the printed voltage, 230 VAC · 50 Hz · 10 VA. It is described as a plug-in control board from Honeywell.

Is it compatible with my Junkers ZW23-1AE23?

The compatibility of this variant is pending confirmation. Registered: for the ZW23-1AE23. Not confirmed: that model with this PCB; it places it in the Junkers Euroline series and a repair forum (monitor..ws), in the Euroline ZW/ZS 23-1.

Is it compatible with the Junkers Euroline ZW/ZS 23-1 KE?

The compatibility of this variant is pending confirmation. A repair forum thread (one source only) shows the 45.007.351-005 REV.A in a Euroline ZW/ZS 23-1 KE. It is to be confirmed: send us a photo of the label on the PCB and the data plate of your boiler from Contact, or call 911 17 77 77.

What is the difference between 45.007.351-003, S4962CM1004V04, and Junkers 8708300212?

Two forums mention the 45.007.351-003 REV.A for the Junkers 23-1 (one for the Euroline 23-1AE) without stating that it is the same as the -005. The Honeywell PCB/S4962CM1004V04 for the ZW23-1AE23 with the Junkers code 8708300212, which the official spare parts list for the ZW23-1AE writes as 8 708 300 212 0 ("Leiterplatte"). Your PCB marks CM1004V04, but without additional confirmation of content, link those codes with the 45.007.351-005. One thread cites the S4962CM1004 for the 003 and the joint URL 87083002120 with a 45-007-351-006: compare them before ordering it.

What do the codes 45.007.351-005, CPCp G3, CM1004V04, and 00248 mean?

45.007.351-005 REV.A is Honeywell's designation for the PCB (referred to as "electronic version"). CPCp G3 · 94V-0 is the marking on the printed circuit board; CM1004V04 and 00248 are codes marked on the board. Without additional confirmation, we have not read or explained CM1004V04, 00248, or the printed settings "3 MIN" and "5 SEC".

What symptoms point to this PCB?

Repair forums for the 45.007.351-005 REV.A mention a boiler unresponsive with the yellow power LED fixed, and PCBs with resistors R1 and R5 burned after water ingress or with R1, R5, and varistor S10K275 burned after a 400 V overvoltage. In one thread, a user found the microcontroller UPD78F9116GS short-circuited. These are user opinions, not a diagnosis.

Who should install it?

A qualified technician: the PCB is printed with a voltage of 230 VAC and controls a gas boiler. After installing it, the technician should check the operation of the boiler.

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Honeywell PCB 45.007.351-005 REV.A · Junkers ZW23-1AE23