697438

Worcester-Bosch GREENSPRING CWi47 Manual

57
Zoom out
Zoom in
Previous page
1/64
Next page
57
Fault finding and diagnosis
GREENSPRING CWi47 – 6 720 646 322 (2015/04)
No flame ionization detected when water
flowing.
1. Verify that all manual gas isolation valves are open.
2. Check gas type.
3. Check inlet gas pressure.*
4. Reset fault code and open a hot water tap to cycle the heater in
an effort to release air from the hot water system. Cycling hot
water tap on and off multiple times may be necessary. If heater
still shows fault code EA, have a Gas Safe registered engineer
properly purge the gas line leading to the water heater.
5. Check three wiring connections on the lower front of the heat
exchanger are secure.
6. Check flue requirements are met. Improper flueing may cause
premature failure of the flame sensor rod.
7. Check the minimum power fan speed has been adjusted to the
proper value (
Chapter 9.7).
8. Inspect the inside of the combustion through the sight glass.
Sparking should be followed by a steady blue flame. If flame is
unstable/yellow with sufficient gas pressure, check CO
2
readings.*
Ionization failure during operation. 1. Check gas type.
2. Check inlet gas pressure.*
3. Check three wiring connections to ignition group on the lower
front of the heat exchanger are secure.
4. Verify that flue requirements are met. Improper flueing may
cause premature failure of the flame sensor rod.
5. Check the minimum power fan speed has been adjusted to the
correct value ( Chapter
9.7).*
6. Check CO
2
readings.
Ionization fault at standby. 1. Undo connection to the flame ionization sensor. Verify that the
thinner wire leading from the control unit is securely connected to
the electrodes located on the lower front of the heat exchanger.
2. Flame ionization sensor or control unit may be damaged. Call
Technical Support.
Gas leakage error, gas valve circuit not
closing properly.
1. Disconnect power supply and check wiring connections on gas
valve and the two connectors on the control board.
2. Draw water from a hot water tap above the minimum activation
point (1.9 l/m). Measure voltage at the gas valve wiring
connection. The voltage should measure 24VDC between the left
pair of wires and 24VDC between the right pair of wires when the
unit is in operation. If voltage is not insufficient, call the Technical
Assistance.*
3. Gas valve may be defective, call Technical Support.
Display Cause Solution
Table 28
* By qualified registered gas engineer only.
… 57 …


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 Worcester-Bosch GREENSPRING CWi47 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 Worcester-Bosch GREENSPRING CWi47 in the language / languages: English as an attachment in your email.

The manual is 5,96 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.

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