Vaillant TL-AE/66 PCB · 734766 for TURBOmax Plus/pro Series 2-5

Application to the exact variant pending confirmation. To be confirmed: It is the main PCB of the boiler: it manages the ignition, the fan, the pump, and the gas valve. It is suspected in case of intermittent faults.

Type of part: Vaillant
Status: Refurbished
internal SKU: PLVMW24RX
Warranty: 1 year

VAT included Stock · 2 units

Compatibility

Compatible Vaillant boilers

Vaillant. 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.

Vaillant TURBOmax plus 824 E and 828 E (VUW 242/2-5 and 282/2-5)	Vaillant	Unconfirmed
Vaillant Thermocompact 615 E, 620 E, 624 E, 628 E and 637 E	Vaillant	Unconfirmed
Vaillant TURBOmax plus/pro series 2-5	Vaillant	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 TL-AE/66 and the code 734766, with "Copyright Vaillant 2001" on your PCB. In our unit, the label also reads TLC-AE/6.0.
Compare the internal marked components: main circuit 734498, gray module E3740/13 · 734637, and RM-02.
Compare terminals and connectors: 21 V and 230 V, terminal block 7, 8, 9, L, N, ground, 3, 4, 5 and fuse marked T1.25.
Do not confuse it with 130805 (series 2-3), 130827 (36 kW) or 0020034604 (successor of 130806). Always compare with the 734766 on your PCB.
if they match, call us at 911 17 77 77 with the model of your boiler. Any questions? Send us a photo of the label of your spare part and the PCB of the boiler from Contact.

Diagnosis and fault codes

Symptoms that require diagnosis in the Vaillant.

Common symptoms and faults

01
The boiler intermittently locks out.
Cause: To confirm: it mentions spare parts for the PCB of the Turbomax Plus 824E and 828E. Check the exact model and the F.xx codes of the boiler before replacing it.
02
The boiler shows F.28: it does not detect flame when starting.
Cause: The control board is one of the possible causes of the ignition fault.
Note the code displayed. A technician must rule out other causes of the fault before replacing the PCB.
03
The boiler shows F.27: it detects flame with the burner off.
Cause: The gas valve does not close properly (it is not airtight) or the PCB is defective.
Have a technician first check the gas valve for tightness. If it is tight, check the PCB.

Vaillant fault codes that require diagnosis

Code	Fault	Technical checks
F.28	No flame signal detected during ignition.	The PCB is one of the possible causes. A technician must check the other causes before replacing it. If your PCB has TL-AE/66 and 734766, please consult us.
F.27	Flame is detected with the burner off.	Possible causes: gas valve not closing properly or faulty PCB. A technician should first check the gas valve.

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

Vaillant

Uniclima internal SKU: PLVMW24RX
Brand: Vaillant
Type of part: Vaillant
Units in stock: 2 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.

Terminal silkscreen: 21V; 230V
Inventory — Indicated model: TLC-AE/6.0
Inventory — Application indicated in inventory: Compatible with reference: Main PCB Vaillant TL-AE/66 for TURBOmax plus/pro boilers from series 2-5. It manages ignition, fan, pump, and gas valve. Use it only if your board matches in silkscreen and connectors. Check exact model and codes F.xx before replacing it. Ref. 287168, refurbished.
Inventory — Type/model read on label: TLC-AE/6.0
Inventory — Terminals: 21 V and 230 V
Inventory — Fuse/marking next to fuse: T1,25
Inventory — Internal transformer: 230 V, 50 Hz
Inventory — Mounted transformer: 230 V, 50/60 Hz
Inventory — Main CI subcomponent: 734498; Eunos 4110L; 342A 4230C; Vaillant
Inventory — Gray internal module subcomponent: E3740/13; 734637
Inventory — Relay subcomponents: ZETTLER; China
Inventory — Marking of plate/module: RM-02
Inventory — Marked burner: 7, 8, 9, L, N, earth, 3, 4, 5
Manufacturer information — Control box fuse: 1.25 AT (art. 251961) or 2.0 AT (art. 251955) · Vaillant catalog 840130.03
Identification — Marked designation: TL-AE/66
Identification — Marked code: 734766
Identification — Marked code: Copyright Vaillant 2001
Technical sheet: Terminal screen printing: 21V; 230V
Inventory data — Indicated model: TLC-AE/6.0
Inventory data — Application indicated in inventory: Compatibilities:
Inventory data — Application indicated in inventory: Main PCB Vaillant TL-AE/66 for TURBOmax plus/pro boilers from series 2-5. It manages ignition, fan, pump, and gas valve. Use it only if your board matches in silkscreen and connectors. Check exact model and F.xx codes before replacing it. Ref. 287168, refurbished.
Inventory data — Type/model read on label: TLC-AE/6.0
Inventory data — Bornes: 21 V and 230 V
Inventory data — Fuse/marking next to fuse: T1,25
Inventory data — Internal transformer: 230 V, 50 Hz
Inventory data — Mounted transformer: 230 V, 50/60 Hz
Inventory data — Main CI subcomponent: 734498; Eunos 4110L; 342A 4230C; Vaillant
Inventory data — Subcomponent gray internal module: E3740/13; 734637
Inventory data — Relay subcomponents: ZETTLER; China
Inventory data — Labeling of plate/module: RM-02
Inventory data — Marked burner: 7, 8, 9, L, N, earth, 3, 4, 5
Pending applications to verify: Vaillant TURBOmax plus/pro series 2–5 — confirmed; awaiting confirmation of the exact model.

Frequently Asked Questions

Frequently asked questions: Vaillant

How do I identify the Vaillant TL-AE/66 PCB?

Look for the designation TL-AE/66 and the code 734766, with "Copyright Vaillant 2001". On the unit, the label also reads TLC-AE/6.0. Also compare RM-02, 734498 and E3740/13 · 734637.

Is it compatible with my Vaillant TURBOmax plus or pro?

The compatibility of this variant is pending confirmation. If it is a TURBOmax plus or pro from the series 2-5: it is the series that has been registered. Exception: the 36 kW (VUW 322 and 362/2-5, for example the 837 E) have a different PCB in the official catalog, the 130827; see the response about Thermocompact, VUW /2-3 or 36 kW. If it is from the series 2-3 (Euro Pro, VUW 182…282/2-3), we have not registered it and the catalog lists the 130805; it also lists the Turbomax Pro 24E and 28E as VUW 242/2-3 and 282/2-3. The 824 E and 828 E are mentioned as series 2-5, but they are not named and only the 734766 is cited for them.

What is the difference between 734766, 130806, and 0020034604?

To confirm: The official spare parts catalog from Vaillant (840130.03, 07/2006) lists 130806 ("Euro Plus", series -5) for the VUW 182…282/2-5, but does not mention 734766. In the open pages, it only lists 734766 and 130806 together. 0020034604 is indicated as a substitute for 130806.

What do TL-AE/66, TLC-AE/6.0, and 734766 mean?

TL-AE/66 is the designation marked on the plate and 734766 is the code marked next to "Copyright Vaillant 2001". TLC-AE/6.0 is the type read on the label of this unit. Those identifying 734766 as PCB do not mention TL-AE/66 or TLC-AE/6.0.

Is it compatible with a Thermocompact, a VUW /2-3 or a 36 kW?

The compatibility of this variant is pending confirmation. We cannot confirm it. The official catalog lists other PCBs: 130805 (VUW 182…282/2-3) and 130827 (36 kW, VUW 322 and 362/2-5). In the open pages, it only mentions "Thermo Compact" alongside 734766. Send us a photo of the label via Contact or call 911 17 77 77.

What symptoms point to this PCB?

To confirm: intermittent lockouts as a typical fault of the PCB of the Turbomax Plus 824E and 828E. Please verify the exact model and the F.xx fault codes of the boiler first.

Who should install it?

A qualified technician. The PCB operates at 230 V in a gas boiler: before touching anything, turn off the power and close the gas.

How to identify this PCB?

Compare the silkscreen, the distribution of the connectors, and the exact variant of the circuit with the photographs.

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Vaillant TL-AE/66 PCB · 734766 for TURBOmax Plus/pro Series 2-5