503218
77
Zoom out
Zoom in
Previous page
1/100
Next page
is
Instruction manual BFC 77
F03 (lock out error)
The pressure switch
fails to work correctly
Damaged wiring/Open
circuit
1. Check the wiring between the pressure switch and the
controller
2. If necessary, replace the wiring
If the error cannot be resolved or is persistent, contact your
installation engineer
To replace the necessary parts, you must contact your installation
engineer
Pressure switch not
closing
1. Check the speed of the fan (3.4.2 "
General and electrical
specifications").
2. Check that the hoses on the pressure switch and the air supply
hose between fan and burner are correctly fitted. Refit them if
necessary
3. Check for cracks in the hoses on the pressure switch and in the
air supply hose between fan and burner. If necessary, replace
the hoses.
4. Check whether the chimney flue is compliant (3.9 "
Air supply
and chimney flue discharge").
5. Check for blockage in the chimney flue. Remove any blockage
that may be present
6. Check for blockage in the condensation water discharge.
Remove any blockage that may be present.
7. Measure the pressure differential across the pressure switch.
See the table (3.4.2 "
General and electrical specifications"). If
there is insufficient pressure differential, clean the heat
exchanger. If the pressure differential is acceptable, check that
the pressure switch is closing, using a multimeter.
Code + description Cause Measure Remark
77


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for A.O. Smith BFC60 at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of A.O. Smith BFC60 in the language / languages: English as an attachment in your email.

The manual is 3,04 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

Others manual(s) of A.O. Smith BFC60

A.O. Smith BFC60 Usermanual and installation guide - German - 100 pages

A.O. Smith BFC60 User Manual - Dutch - 116 pages

A.O. Smith BFC60 Manual - Dutch - 2 pages


The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info