Atag Q42CR | from 2020 OSS3 spare parts

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In brief

Instalpunt supplies 115 original parts for the Atag Q42CR | from 2020 OSS3, including fans, temperature sensors and NTC sensors, pressure sensors. Order online.

115Spare parts
60In stock
€20.47From
21Types
availableExploded view

Looking for parts for the Atag Q42CR | from 2020 OSS3 (boiler)? Below are all 115 original parts, grouped by part type, with the matching exploded view. Choose a type to jump straight to the right table.

View the interactive exploded view →

Quick left to the right part for the Atag Q42CR | from 2020 OSS3

Part	From	Delivery
Fan Atag fan assembled 230V AC	€448.69	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).
Ignition part Atag ignition electrode incl. seal Q and SHR after new heat exchanger 2013 from 2009	€112.81	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).
Pressure sensor Atag water pressure sensor Huba	€123.61	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).
Temperature sensor Atag NTC return 10K	€42.07	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).

Prices incl. VAT, taken directly from our checkout. Below is the complete parts list for this model.

Installer or self-employed engineer? Create a business account: prices excl. VAT and invoices in your company name.

Fans for the Atag Q42CR | from 2020 OSS3 (2) all Atag fans →

Part	Item no. / mfr. no.	Price	Stock
Atag fan assembled 230V AC	8135470 Mfr. no. S4310520	€448.69	In stock	View & order
Rewind refurbished fan for Atag 230V AC (S4310520)	8930069	€303.43	In stock	View & order

Temperature sensors and NTC sensors for the Atag Q42CR | from 2020 OSS3 (2) all Atag temperature sensors and NTC sensors →

Part	Item no. / mfr. no.	Price	Stock
Atag NTC return 10K	8139178 Mfr. no. S4746000	€42.07	In stock	View & order
Atag NTC flow 10K	8139180 Mfr. no. S4745900	€55.03	In stock	View & order

Pressure sensors for the Atag Q42CR | from 2020 OSS3 (1)

Part	Item no. / mfr. no.	Price	Stock
Atag water pressure sensor Huba	8135490 Mfr. no. S4466300	€123.61	In stock	View & order

Pumps for the Atag Q42CR | from 2020 OSS3 (1) all Atag pumps →

Part	Item no. / mfr. no.	Price	Stock
Atag pump upm 20-70 q	8139840 Mfr. no. S4746300	€632.83	Made-to-order item	View & order

Gas valves and gas control for the Atag Q42CR | from 2020 OSS3 (3) all Atag gas valves and gas control →

Part	Item no. / mfr. no.	Price	Stock
Atag gas control block	8139183 Mfr. no. S4751900	€225.67	In stock	View & order
Atag gas pipe cpl. oss2-4 S4722300	8135639 Mfr. no. S4722300	€103.63	Made-to-order item	View & order
Atag venturi SHR51/60	8139123 Mfr. no. S4319020	€131.71	Made-to-order item	View & order

Ignition and ionisation for the Atag Q42CR | from 2020 OSS3 (3) all Atag ignition and ionisation →

Part	Item no. / mfr. no.	Price	Stock
Atag ignition electrode incl. seal Q and SHR after new heat exchanger 2013 from 2009	8138101 Mfr. no. S4710100	€112.81	In stock	View & order
Atag ignition transformer	8138546 Mfr. no. S4851000	€70.15	Made-to-order item	View & order
Atag ignition cable set	8138559 Mfr. no. S4863800	€69.07	Made-to-order item	View & order

Siphons and condensate drains for the Atag Q42CR | from 2020 OSS3 (1) all Atag siphons and condensate drains →

Part	Item no. / mfr. no.	Price	Stock
Atag siphon complete SHR	8136240 Mfr. no. S4451610	€77.71	In stock	View & order

Burners for the Atag Q42CR | from 2020 OSS3 (1) all Atag burners →

Part	Item no. / mfr. no.	Price	Stock
Atag burner bed OSS3/4 natural gas	8138129 Mfr. no. S4825600	€400.63	In stock	View & order

Displays and controls for the Atag Q42CR | from 2020 OSS3 (1) all Atag displays and controls →

Part	Item no. / mfr. no.	Price	Stock
Atag rotary knob AVS37 S4967500	8135611 Mfr. no. S4967500	€51.79	Made-to-order item	View & order

Filters for the Atag Q42CR | from 2020 OSS3 (1)

Part	Item no. / mfr. no.	Price	Stock
Atag water filter	8136265 Mfr. no. S4317500	€52.87	Made-to-order item	View & order

Maintenance and service kits for the Atag Q42CR | from 2020 OSS3 (1) all Atag maintenance and service kits →

Part	Item no. / mfr. no.	Price	Stock
Atag overhaul set insulation tube plate without adhesive	8139066 Mfr. no. S5071600	€196.51	Made-to-order item	View & order

Valves for the Atag Q42CR | from 2020 OSS3 (8) all Atag valves →

Part	Item no. / mfr. no.	Price	Stock
Atag safety relief valve Duco 3 bar	8135200 Mfr. no. S4344630	€45.85	In stock	View & order
Atag automatic air vent chrome SHR for OSS1/2/3/4	8135041 Mfr. no. S4419110	€70.15	In stock	View & order
Atag mixing valve SHR	8131121 Mfr. no. S4312500	€99.31	In stock	View & order
Atag safety relief pipe for inlet combination	8131366 Mfr. no. S4338700	€39.91	In stock	View & order
Atag inlet combination including safety relief pipe	8136400 Mfr. no. S4302220	€112.27	In stock	View & order
Atag dosing valve 12,5 l/min	8133302 Mfr. no. S4264600	€60.43	Made-to-order item	View & order
Atag fill and drain valve 1/2"	8132060 Mfr. no. S1002200	€59.35	Made-to-order item	View & order
Atag union nut 15 compression	8139870 Mfr. no. S1035700	€31.27	Made-to-order item	View & order

Motors for the Atag Q42CR | from 2020 OSS3 (1)

Part	Item no. / mfr. no.	Price	Stock
Atag Energion motor three-way valve	8138504 Mfr. no. S4009500	€170.59	In stock	View & order

Electrical parts for the Atag Q42CR | from 2020 OSS3 (1) all Atag electrical parts →

Part	Item no. / mfr. no.	Price	Stock
Atag fuse 6,3 at h 250v (3 x )	8139872 Mfr. no. S4823100	€31.27	Made-to-order item	View & order

Tap parts for the Atag Q42CR | from 2020 OSS3 (1)

Part	Item no. / mfr. no.	Price	Stock
Atag cartridge for three-way valve	8130385 Mfr. no. S4268400	€110.11	In stock	View & order

Cables and wiring harnesses for the Atag Q42CR | from 2020 OSS3 (12) all Atag cables and wiring harnesses →

Part	Item no. / mfr. no.	Price	Stock
Atag spark plug cable	8135070 Mfr. no. S4323800	€57.19	In stock	View & order
Atag plug 2-pole black	8135380 Mfr. no. S4320500	€31.27	Made-to-order item	View & order
Atag earth cable ignition	8139223 Mfr. no. S4723200	€26.95	In stock	View & order
Atag connecting cable AVS37-LMS S4869700	8135619 Mfr. no. S4869700	€56.11	Made-to-order item	View & order
Atag wiring harness three-way valve S4869600	8135637 Mfr. no. S4869600	€102.55	Made-to-order item	View & order
Atag wiring harness cpl. conn. bl. qr S4967600	8135675 Mfr. no. S4967600	€258.07	Made-to-order item	View & order
Atag ionisation cable for e.g. Q38C S4323900	8135160 Mfr. no. S4323900	€60.43	Made-to-order item	View & order
Atag plug 3-pole grey	8139103 Mfr. no. S4380900	€34.51	Made-to-order item	View & order
Atag plug 3-pole green	8135390 Mfr. no. S4351300	€34.51	Made-to-order item	View & order
Atag plug 3-pole orange	8139102 Mfr. no. S4379600	€34.51	Made-to-order item	View & order
Atag plug 4-pole brown S4320600	8135400 Mfr. no. S4320600	€33.43	Made-to-order item	View & order
Atag plug 6-pole blue	8135410 Mfr. no. S4350600	€48.55	Made-to-order item	View & order

Gaskets and seals for the Atag Q42CR | from 2020 OSS3 (26) all Atag gaskets and seals →

Part	Item no. / mfr. no.	Price	Stock
Atag O-ring siphon R 46 x 3 mm	8135190 Mfr. no. S4309900	€33.43	Made-to-order item	View & order
Atag O-ring siphon/pipe	8131367 Mfr. no. S4316300	€48.55	Made-to-order item	View & order
Atag O-ring condensate tray/siphon	8131368 Mfr. no. S4316400	€25.87	In stock	View & order
Atag sealing ring gas valve/venturi for OSS1/2/3/4	8139033 Mfr. no. S4337610	€26.95	In stock	View & order
Atag sealing ring venturi/fan for OSS1/2/3/4	8139034 Mfr. no. S4325610	€26.95	In stock	View & order
Atag lip ring outlet stub	8139019 Mfr. no. S4472600	€26.95	In stock	View & order
Atag O-ring 2 pcs	8131119 Mfr. no. S4312300	€29.11	In stock	View & order
Atag O-ring 26.7 x 1.78 mm 3 pcs	8136435 Mfr. no. S4259800	€26.95	In stock	View & order
Atag lip seal 80mm for OSS1/2/3/4	8135123 Mfr. no. S4304200	€34.51	In stock	View & order
Atag pump gasket 3/4" DN20 R38x25x2 mm 2 pcs	8130150 Mfr. no. S1003810	€23.71	In stock	View & order
Atag gasket condensate/air box	8130125 Mfr. no. S4339110	€36.67	In stock	View & order
Atag gasket	8135156 Mfr. no. S4323710	€32.35	Made-to-order item	View & order
Atag seal burner bed/upper tray for OSS3/4	8138120 Mfr. no. S4717400	€46.39	In stock	View & order
Atag seal heat exchanger/upper tray for OSS3/4	8138122 Mfr. no. S4719900	€43.15	In stock	View & order
Atag sealing ring intake fan SHR for OSS1/2/3/4	8135246 Mfr. no. S4309500	€24.79	In stock	View & order
Atag gasket fan mouth SHR for OSS1/2/3/4	8135270 Mfr. no. S4305700	€26.95	In stock	View & order
Atag gasket air supply Ø80 mm	8135153 Mfr. no. S4323510	€35.59	In stock	View & order
Atag O-ring 13.94 x 2.62 mm air vent/plate heat exchanger for OSS1/2/3/4	8131325 Mfr. no. S4342300	€25.87	In stock	View & order
Atag seal lower tray for OSS3/4	8138123 Mfr. no. S4724500	€38.83	In stock	View & order
Atag O-ring set 4.8 x 1.8 mm heat exchanger connection	8137056 Mfr. no. S4322320	€24.79	In stock	View & order
Atag O-ring 14.30 x 2.40 mm gas pipe A 3 pcs	8139187 Mfr. no. S4749500	€37.75	In stock	View & order
Atag seal 5,5 EPDM	8135255 Mfr. no. S4397000	€51.79	Made-to-order item	View & order
Atag O-ring three-way valve	8131814 Mfr. no. S4158300	€25.87	In stock	View & order
Atag O-ring R 22,5 x 2 mm	8131369 Mfr. no. S4312100	€25.87	In stock	View & order
Atag seal ionisation/ignition OSS all	8138100 Mfr. no. S4709800	€49.63	In stock	View & order
Atag O-ring 12,42 x 1,78 mm	8131361 Mfr. no. S4342400	€46.39	Made-to-order item	View & order

Pipes, tubes and hoses for the Atag Q42CR | from 2020 OSS3 (10) all Atag pipes, tubes and hoses →

Part	Item no. / mfr. no.	Price	Stock
Atag swivel nut for filter M35	8136445 Mfr. no. S4259500	€36.67	In stock	View & order
Atag safety relief pipe for OSS1/2/3/4	8137040 Mfr. no. S4467300	€47.47	In stock	View & order
Atag coupling set hot water cylinder	8137096 Mfr. no. S4272100	€56.11	In stock	View & order
Atag flue pipe	8136635 Mfr. no. S4500700	€91.75	Made-to-order item	View & order
Atag gas reducer S4307100 -	8139610 Mfr. no. S4307100	€34.51	Made-to-order item	View & order
Atag CH pipe grommet	8139517 Mfr. no. S4310610	€34.51	Made-to-order item	View & order
Atag expansion vessel pipe	8139037 Mfr. no. S4318020	€107.95	Made-to-order item	View & order
Atag pipe Ø15 mm mix SHR	8139108 Mfr. no. S4312900	€65.83	Made-to-order item	View & order
Atag pipe cylinder/three-way valve for e.g. Q38C S4317900	8136071 Mfr. no. S4317900	€60.43	Made-to-order item	View & order
Atag return pipe three-way valve	8139071 Mfr. no. S4326600	€133.87	Made-to-order item	View & order

Casing and panels for the Atag Q42CR | from 2020 OSS3 (3) all Atag casing and panels →

Part	Item no. / mfr. no.	Price	Stock
Atag door Q complete	8138114 Mfr. no. S4731400	€94.99	In stock	View & order
Atag cover air supply 80mm SHR	8139210 Mfr. no. S4323310	€32.35	Made-to-order item	View & order
Atag cover air supply 120/80mm	8138013 Mfr. no. S4323410	€48.55	Made-to-order item	View & order

Insulation for the Atag Q42CR | from 2020 OSS3 (1)

Part	Item no. / mfr. no.	Price	Stock
Atag insulation set tube plate left and right Q/E for OSS1/2/3/4	8138109 Mfr. no. S4730900	€36.67	In stock	View & order

Fixing material for the Atag Q42CR | from 2020 OSS3 (11) all Atag fixing material →

Part	Item no. / mfr. no.	Price	Stock
Atag closure control tower	8135330 Mfr. no. S4323200	€26.95	In stock	View & order
Atag closure front control tower	8135340 Mfr. no. S4323100	€23.71	In stock	View & order
Atag air box closure per piece	8135350 Mfr. no. S4322500	€24.79	In stock	View & order
Atag sealing cap exhaust pipe Ø13mm for flue gas measurement	8136420 Mfr. no. S4521600	€24.79	In stock	View & order
Atag bolt M 5x16 CK-PZ (5 pcs)	8139974 Mfr. no. S4286000	€32.35	Made-to-order item	View & order
Atag cap air vent SHR 3 pcs for OSS1/2/3/4	8139162 Mfr. no. S4380600	€45.31	Made-to-order item	View & order
Atag mounting bracket SHR51T	8139533 Mfr. no. S4341910	€97.15	Made-to-order item	View & order
Atag service nipple	8138125 Mfr. no. S4317200	€32.35	Made-to-order item	View & order
Atag screw taptite M5 x 8 mm ck-pd (3 x )	8139214 Mfr. no. S4167500	€23.71	In stock	View & order
Atag bolt M6 x 20 mm stainless steel hex socket bp 4,2 3 pcs	8139513 Mfr. no. S4307220	€32.35	Made-to-order item	View & order
Atag bolt M5 x 12 mm gr phase hexagon din7985 (5 x )	8139213 Mfr. no. S4418710	€28.03	In stock	View & order

Other parts for the Atag Q42CR | from 2020 OSS3 (24)

Part	Item no. / mfr. no.	Price	Stock
Atag condensate tray assembled 60kW OSS3/4	8138108 Mfr. no. S4730800	€154.93	In stock	View & order
Atag three-way valve body VC8010 (O-R)	8135110 Mfr. no. S4308200	€147.91	In stock	View & order
Atag filter cap	8136440 Mfr. no. S4317610	€47.47	In stock	View & order
Atag clamping rod condensate tray for OSS1/2/3/4	8139052 Mfr. no. S4310700	€34.51	In stock	View & order
Atag burner toggle rod for OSS1/2/3/4	8139057 Mfr. no. S4310800	€35.59	In stock	View & order
Atag hot water cylinder assy 25 litre 51kw	8139746 Mfr. no. S4730500	€1,623.19	In stock	View & order
Atag water trap pressure sensor	8137098 Mfr. no. S4325900	€37.75	In stock	View & order
Atag control tower rear	8136060 Mfr. no. S4322700	€83.11	In stock	View & order
Atag clamping ring outlet stub 80gr S4905800	8135612 Mfr. no. S4905800	€52.87	Made-to-order item	View & order
Atag main switch 230v S4931100	8135613 Mfr. no. S4931100	€52.87	Made-to-order item	View & order
Atag control tower front S4951300	8135634 Mfr. no. S4951300	€98.23	Made-to-order item	View & order
Atag connection lead with plug S4967900	8135635 Mfr. no. S4967900	€100.39	Made-to-order item	View & order
Atag O-ring 13.94x2.62mm blue 3 pcs	8130065 Mfr. no. S4328720	€45.31	Made-to-order item	View & order
Atag cylinder pipe	8139992 Mfr. no. S4318400	€166.27	Made-to-order item	View & order
Atag intake piece SHR51/60	8135419 Mfr. no. S4324720	€64.75	Made-to-order item	View & order
Atag rear panel SHR51/60	8139077 Mfr. no. S4316210	€167.35	Made-to-order item	View & order
Atag upper tray assy OSS3/4	8139582 Mfr. no. S4735200	€158.71	Made-to-order item	View & order
Atag condensate drain pipe	8130886 Mfr. no. S4316500	€35.59	In stock	View & order
Atag condensate plug 1/4" for OSS1/2/3/4	8139712 Mfr. no. S4674500	€33.43	Made-to-order item	View & order
Atag air box SHR 51/60	8139076 Mfr. no. S4315900	€233.23	Made-to-order item	View & order
Atag pipe nipple	8139220 Mfr. no. S4498800	€63.67	Made-to-order item	View & order
Atag hose clamp stainless steel 20-32mm for OSS1/2/3/4	8139224 Mfr. no. S4395600	€34.51	Made-to-order item	View & order
Atag strap for hot water cylinder	8137095 Mfr. no. S4307300	€45.31	Made-to-order item	View & order
Atag flue gas seal Ø80 mm XL	8139636 Mfr. no. S4816700	€39.91	In stock	View & order

Exploded views of the Atag Q42CR | from 2020 OSS3

Click an exploded view to enlarge it. The position numbers are shown next to each part.

Fault code on your Atag Q42CR | from 2020 OSS3? This is the part type involved

Common Atag fault codes and the part type that is usually the cause; the parts for this model are listed above. All codes explained: Atag fault codes.

Code	What is going on	Part type
40	Temperature exceeded at the burner flow temperature sensor.	Burners
78	Water pressure sensor out of range or not connected or, if water pressure is OK: pump defective.	Pumps
104	No pump kick	Pumps
129	Fan fault (fan does not start)	Fans
151	Fan fault (speed control not reached or out of range) or defective control unit.	Fans
501	Ionisation fault	Ignition and ionisation

For guidance only: the same code can have a different cause depending on the situation.

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Frequently asked questions

Which parts are available for the Atag Q42CR | from 2020 OSS3?

The catalogue lists 115 original parts for the Atag Q42CR | from 2020 OSS3, including fans, temperature sensors and NTC sensors, pressure sensors, pumps. All parts are listed above, grouped by type, with part number and price.

How much does a fan for the Atag Q42CR | from 2020 OSS3 cost?

The fans for this model cost €530.67 incl. VAT. Check the table "Fans" above for the right part number.

Are the parts for the Atag Q42CR | from 2020 OSS3 in stock?

60 of the 115 parts are in stock; shipping to EU countries from €12.95 (€16.95 for more distant countries), usually 3–5 working days. Parts marked "Made-to-order item" are ordered specially for you; the delivery time is shown on the product page.

How do I know which part I need for the Atag Q42CR | from 2020 OSS3?

Search for the part by part number or use the exploded view of the Atag Q42CR | from 2020 OSS3.

Are these original Atag parts?

Yes. All 115 parts in this list are original manufacturer parts for the Atag Q42CR | from 2020 OSS3, delivered with the correct part number.

How much do parts for the Atag Q42CR | from 2020 OSS3 cost?

Parts for the Atag Q42CR | from 2020 OSS3 range from €20.47 to €2,253.92 incl. VAT. The exact price of each part is shown in the tables above.

Can I return a part?

As a consumer you have a 14-day right of withdrawal. You may unpack and inspect the part; do not install or connect it. For a part that has been installed, connected or damaged we deduct the diminished value, up to the full price for circuit boards.