What does the Viessmann 452 fault code mean?

The boiler's internal timer has detected a problem with its heating schedule, which may mean your programmed heating times are not running correctly, though the boiler itself may still be working.

How much does it cost to fix Viessmann error code 452?

Typical repair cost for the Viessmann 452 fault is £90-400 including labour.

Viessmann 452 Fault Code: What It Means & How to Fix It

What the manual says

Manufacturer manual

Error in scheduled program run monitoring

From this model's manual

Verified against the Viessmann/Viessmann Vitodens 050 W B0ha B0ka 6194588 installation & service manual.

DIY fix possible

Check the date, time and heating schedule on the boiler's display and reset them if they look wrong.Switch the boiler off at its on/off switch, wait about 30 seconds, then switch it back on to clear the fault.If the code returns, leave the boiler off and contact a Gas Safe registered engineer, as the control unit may need checking or replacing.

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Boiler cover options

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Related fault codes

451View →453View →

All 131 fault codes on the Vitodens 050-W B0KA-35

Seeing a different code? Every code this model can display, in one place.

7 8 13 14 49 50 57 58 59 62 63 64 67 68 69 70 71 72 73 74 75 77 78 87 89 95 104 142 161 163 182 183 184 299 346 347 348 349 350 351 352 353 354 355 357 359 361 364 365 366 367 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 393 394 399 400 401 402 403 404 405 406 408 410 416 417 418 425 446 447 448 449 450 451 453 454 455 456 457 458 461 462 463 464 467 468 471 474 527 528 540 574 575 576 577 578 579 682 683 684 694 738 766 767 799 979 980 981 982 E10 E12

The boiler's internal timer has detected a problem with its heating schedule, which may mean your programmed heating times are not running correctly, though the boiler itself may still be working.

What the manual says

DIY fix possible

Avoid the next call-out bill

Related fault codes

All 131 fault codes on the Vitodens 050-W B0KA-35

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