503220
78
Zoom out
Zoom in
Previous page
1/100
Next page
is
Instruction manual BFC 78
F04 (lock out error)
Three unsuccessful
ignition attempts.
No gas 1. Open the main gas supply valve and/or the manual gas supply
valve before the gas control valve
2. Check supply pressure to the gas control valve
3. If necessary, restore the gas supply
To restore the gas supply, contact your installation engineer
Air in the gas pipes Bleed the air out of the gas pipe (3.11 "
Check the supply pressure,
gas control valve pressure, CO
2
value and switching pressure")
See Checking the supply pressure and burner
pressure (3.11 "
Check the supply pressure, gas control valve
pressure, CO
2
value and switching pressure") for how to bleed air
from the gas line and how to measure the supply pressure and
burner pressure.
To replace the necessary parts, you must contact your installation
engineer
Defect in the hot
surface igniter circuit
1. Check that the hot surface igniter is correctly connected (JP2).
2. Check the wiring of the hot surface igniter.
3. Measure the resistance across the hot surface igniter. This must
lie between 2 and 10 Ohm (at room temperature).
4. Check that the hot surface igniter lights up during ignition.
5. If necessary, replace the hot surface igniter.
If the error persists, contact your installation engineer.
To replace the necessary parts, you must contact your installation
engineer
Defect in the ionisation
circuit
1. Check that the flame probe is correctly connected (JP2)
2. Check the wiring of the flame probe
3. Measure the ionisation current. This must be a minimum of
1.5 microA.
4. If necessary, replace the wiring.
Supply voltage too low Check the supply voltage, this must be 230 V
AC(-15%, +10%)
F05 (lock out error)
Too many flame errors
have been signalled.
Incorrect roof or wall
flue terminal.
Recirculating flue
gases.
1. Check that the correct roof or wall flue terminal has been
installed (3.9 "
Air supply and chimney flue discharge").
2. If necessary, install the correct roof or wall flue terminal.
3. Check that the roof or wall flue terminal discharges into a
permitted area.
If the error cannot be resolved or is persistent, contact your
installation engineer
Code + description Cause Measure Remark
78


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 BFC100 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 BFC100 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 BFC100

A.O. Smith BFC100 Usermanual and installation guide - German - 100 pages

A.O. Smith BFC100 User Manual - Dutch - 116 pages

A.O. Smith BFC100 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