Honeywell MIDINT00 PCB · 56.5599.4 for Cointra SUPRA SP 21 EI
Application for the exact variant pending confirmation. Control board of the boiler. It has relays and a switch marked SW1 T.RISC, GPL, T-OFF, and POMPA.
- Type of part
- PCBs (control boards)
- Status
- Refurbished
- internal SKU
- PLC303
- Warranty
- 1 year
VAT included OUT OF STOCK
Baxi boilers compatible
PCB. 0 verified compatibilities. There are 3 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.
| Baxi Potterton Performa 80e / 105e (Maxflue) | Baxi (according to 4 external sources) | Unconfirmed |
|---|---|---|
| Baxi Chappée Luna 2.24 FF | Baxi (according to 4 external sources) | Unconfirmed |
| Cointra SUPRA SP 21 EI | Baxi (according to 4 external sources) | Unconfirmed |
Can't see your model or have questions? The printed reference takes precedence. How to check it · Send us a photo via WhatsApp.
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 markings "Sw R128F Y-PLAN" and "56.5599.4" on the label, the latter is written as 5655994.
- Compare the rest: circuit "CE 0051BL1810", "99.5099.4", "CS0167B - LS" and the designation "MIDINT00" from Honeywell.
- Do not confuse it with other PCBs mentioned for the Supra: 5655990, 5672510, 51BP2783, and A048B5033FA are different codes.
- Look at the model on the rating plate of your boiler. registered: the Cointra SUPRA SP 21 EI.
- if they match, call us at 911 17 77 77 with the model of your boiler.
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
If there is a gas shortage, the boiler makes three ignition attempts and locks out on the third attempt.
Cause: According to the Cointra manual, in case of gas failure, it makes three attempts at intervals of 25 seconds and locks out on the third attempt, but only in the variant with the Honeywell card, for which it does not provide the fault code. It does not indicate that this is a fault of this PCB. First, check that gas is reaching the unit.
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 sheet: Baxi PCB
- Uniclima internal SKU
- PLC303
- Brand
- Baxi (according to 4 external sources)
- Type of part
- PCBs (control boards)
- Units in stock
- 0 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.
- SelectorSW1 marked
- T.RISC; GPL; T-OFF; POMPA
- Inventory — SCHRACK Relay V23148-A101
- 12 V=
- Inventory — Mounted relays
- 10 A 250 V~ / 7 A 250 V~
- Inventory — Application indicated in inventory
- COINTRA SUPRA SP 21 EI
- Inventory — Marked code
- Sw R128F Y-PLAN; 56.5599.4; 99.5099.4; Date0204 035691
- Identification — Marked code
- Sw R128F Y-PLAN
- Identification — Marked code
- 56.5599.4
- Identification — Marked code
- 99.5099.4
- Identification — Marked code
- Date0204 035691
- Identification — Marked code
- CS0167B - LS
- Technical sheet: SelectorSW1 marked
- T.RISC; GPL; T-OFF; POMPA
- Inventory data — SCHRACK relay V23148-A101
- 12 V=
- Inventory data — Mounted relays
- 10 A 250 V~ / 7 A 250 V~
- Inventory data — Application indicated in inventory
- COINTRA SUPRA SP 21 EI
- Inventory data — Marked code
- Sw R128F Y-PLAN; 56.5599.4; 99.5099.4; Date0204 035691
- Pending applications to verify
- COINTRA SUPRA SP 21 EI — compatibility noted; pending confirmation by variant.
Before purchasing
- Check the fuse before blaming the PCB: according to the Cointra manual, it is a fast fuse of 2 A, located in the power terminal board of the boiler and not on the PCB.
- To confirm: Potterton Performa 80e / 105e (Maxflue) — 1 origin: from spare parts («Baxi - Potterton Performa 80e 105e Maxflue PCB - 0051BL1810 -5655994 9950994»)
- To confirm: Chappée Luna 2.24 FF — 1 origin: from the codes on the PCB ("Carte électronique pour chaudière Chappee Luna 2.24 ff")
- Do not confuse: 5655990 — PCB (SIT), position 154 of the official SUPRA spare parts catalog (2006) — Almost the same, but the last digit changes (…0 versus …4). Not confirmed: 5655994 as equivalent to 5655990.
- Do not confuse: 5672510 — PCB for the SUPRA SP231EI and SP27EI — Another code: its technical sheet does not mention any of the codes for this PCB.
- Do not confuse: 51BP2783 — PCB that replaces the SUPRA SP 21/27 EI — Another OEM code: its technical sheet does not mention Honeywell or 56.5599.4.
- Do not confuse: A048B5033FA — Board that is also compatible with the SUPRA SP 21EI (title); its description states SUPRA COMPACT SPC 21 EI — Another OEM code: its technical sheet does not mention 5655994 or 56.5599.4.
- Do not confuse: 5112380 — PCB that a British seller provides for Baxi 105E/80E and Potterton Performa (previously 248074) — Another code: its technical sheet does not mention any of those for this PCB.
- Registered identity by: ligan 5655994 / 56.5599.4, 0051BL1810 and MIDINT00 to a Baxi PCB (: «Baxi Honeywell»). It is registered as Honeywell and sends its data. None mention the Cointra SUPRA SP 21 EI, registered.
- Pending registered applications to confirm by model, variant, or programming: Cointra SUPRA SP 21 EI.
Frequently asked questions about the PCB (control board)
How do I identify the Honeywell MIDINT00 PCB?
Look for the marked "Sw R128F Y-PLAN" and "56.5599.4". Also compare the circuit "CE 0051BL1810", "99.5099.4", and the designation "MIDINT00". Write them without dots: 5655994 and 9950994 (one). List them together, except for "CS0167B - LS".
Is it compatible with my Cointra SUPRA SP 21 EI?
The compatibility of this variant is pending confirmation. Registered application: this PCB for the Cointra SUPRA SP 21 EI. None of the names mention Cointra: they link the codes to Baxi, Potterton, and Chappée boards. The manufacturer's manual mentions a variant of the SUPRA with a Honeywell card, although it does not provide its code.
What other PCBs are mentioned for the Supra and how do they differ?
The official spare parts catalog SUPRA (October 2006) lists in position 154 the PCBs 5655990 (SIT), 5657840 (INECO), 5672510, and 5657130; 5655994 does not appear. The 5655990 only differs in the last digit and is not confirmed: 5655994 as equivalent. The 51BP2783 for the SP 21/27 EI and the A048B5033FA for the SP 21EI (its description states SUPRA COMPACT SPC 21 EI). Always compare the marked code.
What do the codes on the PCB mean?
«CE 0051BL1810» is the code of the printed circuit board (PCB). «0051BL1810» is the reference, and it is listed. «56.5599.4» is one of the codes marked on the board: as Baxi part number (5655994). «MIDINT00» is the Honeywell designation. «99.5099.4» and «CS0167B - LS» are other markings.
Does it fit in a Baxi, Potterton, or Chappée?
To confirm: each boiler has a single origin. 0051BL1810, 5655994, and 9950994 as PCB for the Potterton Performa 80e and 105e Maxflue, and it provides the codes for the Chappée Luna 2.24 FF. Another British seller provides the PCB 5112380 (previously 248074) for the Baxi 105E/80E: they do not match for those models. For another boiler, call us at 911 17 77 77 with its exact model.
What should I check when installing it?
The PCB has a selector SW1 marked T.RISC, GPL, T-OFF, and POMPA. The Cointra manual for the SUPRA SP range uses these four labels on bridges or switches and asks to adjust them with the boiler powered off. With T.RISC in OFF, the heating goes from 30 to 85 °C, and in ON, from 30 to 45 °C. It describes two regulation systems (A or B) but does not specify which one this PCB has nor identifies it by its code: copy the position of the old one.
What precautions should be taken when opening the panel and assembling it?
Cut the power with the bipolar switch before opening the control panel (Cointra manual). The PCB has relays rated at 250 V~ (10 A and 7 A). Also check the 2 A fast fuse, which is located on the terminal board and not on the PCB, as well as the SW1 selector.
Honeywell MIDINT00 PCB · 56.5599.4 for Cointra SUPRA SP 21 EI
