Spare parts — usually 3–7 working days EU delivery from € 9.95 · free from € 199 Made to order: lead time approx. 3–4 weeks + 3–5 working days delivery Delivery across the EU WebwinkelKeur 8,8/10 Pay by card, Apple Pay, Pay by Bank, PayPal & Klarna
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A.O. Smith main safety thermostat
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A.O. Smith main safety thermostat 0313784(S)

€ 134.03 incl. VAT

Original spare part A.O. Smith. Type: Thermostat. Application: Hot water cylinder / DRE 52 18kW (from 04-2022). Supplier code: 0313784(S).

Made to order: lead time approx. 3–4 weeks + 3–5 working days delivery

SKU: 8750974 Categories: , Brand:
⏱ Made-to-order item — approx. 3–4 weeks + 3–5 working days delivery
Delivery € 9.95 (AT, DK, ES, IT, SE) / € 12.95 (other EU countries), free from € 199 · Shipping & payment

Price incl. VAT. Any delivery costs are calculated in the basket — see shipping & delivery.

Does this fit my appliance?
ApplicationHot water cylinder
Series / modelDRE 52 36kW (from 04-2022) and 6 other models
A.O. Smith number0313784(S)
Article number8750974
Not sure? Search by article or manufacturer number or check with the manufacturer or your installer.
All spare parts for A.O. Smith DRE 52 36kW (from 04-2022) →
Made-to-order item — this spare part is not on our shelf and is ordered specially for you from the manufacturer, delivery time approx. 3–4 weeks. Check your appliance type and the part number beforehand. Specially ordered items can in principle not be returned. In doubt? Ask the manufacturer or your installer (see also returns).
8,8/10 WebwinkelKeur⚠ Order-on-demand item: ordered specially for you Card · Apple Pay · Pay by Bank · Klarna · PayPal +31 85 303 7272 Mon–Fri 08:00–16:30 CET

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A.O. Smith main safety thermostat: original A.O. Smith spare part, type: Thermostat. Application: Hot water cylinder (DRE 52 18kW (from 04-2022)). Manufacturer number: 0313784(S); Instalpunt article number: 8750974.

According to the A.O. Smith parts lists, this part fits 7 models, including A.O. Smith DRE 52 9kW (from 04-2022), A.O. Smith DRE 52 18kW (from 04-2022) and A.O. Smith DRE 52 36kW (from 04-2022). The full list is under “Fits”.

Special-order item: it is ordered specially for you from the manufacturer. Specially ordered items can in principle not be returned. Please check the type plate of your appliance and the part number before ordering.

Check the rating plate of your appliance before ordering; if in doubt, ask the manufacturer or your installer.

Product information: A.O. Smith main safety thermostat 0313784(S)

BrandA.O. Smith spare parts
A.O. Smith manufacturer number0313784(S)
Instalpunt article number8750974
EAN8717449336844
Part typeThermostat (All A.O. Smith thermostats and controls · thermostats and controls of all brands)
ApplicationHot water cylinder
Suitable for7 A.O. Smith models (see list)
DeliverySpecial-order item, delivery time approx. 3–4 weeks
Price€ 134.03 incl. VAT
OriginGenuine manufacturer part, under A.O. Smith number 0313784(S)

Also known as: maximaalthermostaat, ketelthermostaat.

Fits 7 A.O. Smith models

The part A.O. Smith main safety thermostat 0313784(S) is in the official parts list of these A.O. Smith appliances. Click a model for the complete parts list and exploded view.

A.O. Smith Hot water cylinder (7)

Check the rating plate of your appliance. Not sure whether this part fits? Check with the manufacturer or your installer; with the correct manufacturer number you can order it here directly.

Position on the parts diagram

This spare part is shown as position 10 on the parts drawing. Open the drawing for the appliance and click the number to check that you have the right spare part.

Also appears on the drawing of 1 other model.

For which fault is a A.O. Smith thermostat replaced?

According to the fault code database, these A.O. Smith fault codes point to this type of part. Always check first that the code matches the appliance type on the rating plate.

CodeWhat is going on
0A5De hoofdveiligheidsthermostaat (G1) is geactiveerd.

All A.O. Smith fault codes explained

Indicative: the same code can have a different cause depending on the situation. Have work on gas, flue or burner adjustment carried out by a qualified installer.

Available: Thermostat by A.O. Smith

This part is currently out of stock. There is no available alternative of this type for the same models. These A.O. Smith parts of the same type are available, but belong to other models.

Please note: these are not confirmed replacements. Check the manufacturer number in the spare parts list or exploded view of your appliance, or just ask us.

Frequently asked questions about this item

Does the A.O. Smith main safety thermostat 0313784(S) fit my appliance?
This part is in the parts list of 7 A.O. Smith models, including the DRE 52 9kW (from 04-2022), DRE 52 18kW (from 04-2022), DRE 52 36kW (from 04-2022), DRE 80 9kW (from 04-2022). The model type is on the rating plate of your appliance. If in doubt, ask the manufacturer or your installer.
What is the delivery time of this made-to-order item?
This is a special-order item: it is ordered specially for you from the manufacturer. The expected delivery time is approx. 3–4 weeks. You can also see the delivery time next to the stock status at the top of this page.
Can I return this made-to-order item?
No, specially ordered items can in principle not be returned. So check the article number and the rating plate of your appliance beforehand. Is something wrong with your order? Then contact us via info@instalpunt.nl. The full terms and conditions are on returns.
What does shipping cost?
Shipping costs € 9.95 to Austria, Denmark, Italy, Spain and Sweden and € 12.95 to other EU countries; free delivery from € 199. In-stock items usually arrive within 3–5 working days, made-to-order items within 5–7 working days (a longer lead time is shown on the product page). Details: Shipping.
I have a fault code, which part do I need?
Look up the code in the fault code finder: per brand and appliance it shows what the code means and which part goes with it. If the code is listed with this part, the part belongs to that fault.

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