What does the Viessmann 449 fault code mean?

Your boiler's control panel has noticed a problem with its built-in timer that decides when your heating and hot water should switch on, so the schedule may not be running as set.

How much does it cost to fix Viessmann error code 449?

Typical repair cost for the Viessmann 449 fault is £120-350 including labour.

Viessmann 449 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 100 W B1hf B1kf 6167586 installation & service manual.

DIY fix possible

Check the date and time on the boiler display and correct them if they are wrong or have reset.Review your heating and hot water timer settings and re-enter your schedule if it looks incorrect.Turn the boiler off at its fused spur or isolator switch, wait about 30 seconds, then switch it back on to restart the controller.If the code returns, do not keep resetting it. Book a Viessmann-registered engineer to check the control unit.

Find a Gas Safe engineer

Search the official register →

Boiler cover options

Avoid the next call-out bill

A cover plan would handle faults like 449: no call-out fees, no surprise bills.

Approved partner

Domestic Appliance Guard

Unlimited call-outs, 24/7 helpline, no price-hike promise

Get a quote →

Affiliate links. We may earn a commission at no extra cost to you.

Related fault codes

448View →450View →

All 151 fault codes on the Vitodens 100-W B1HF-11

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

7 8 11 12 13 14 15 16 29 30 49 50 57 58 59 62 63 64 65 67 68 69 70 71 72 73 74 75 77 78 87 89 91 92 95 100 102 103 104 142 161 162 163 176 182 183 184 185 299 345 346 347 348 349 350 351 352 353 354 355 357 359 361 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 395 396 399 400 401 402 403 404 405 406 408 410 416 417 418 425 446 447 448 451 452 453 454 455 456 457 458 461 462 463 464 467 468 471 474 477 517 527 528 540 544 545 574 575 576 577 578 579 682 683 684 694 738 766 767 799 979 980 981 982 E10 E12

Your boiler's control panel has noticed a problem with its built-in timer that decides when your heating and hot water should switch on, so the schedule may not be running as set.

What the manual says

DIY fix possible

Avoid the next call-out bill

Related fault codes

All 151 fault codes on the Vitodens 100-W B1HF-11

Related guides you might find useful

Thermostat not working

No hot water but heating works

Is boiler cover worth it?

Recently viewed