Glow-worm ENERGY 25c, Инструкция по установке и обслуживанию, Страница: 26 / 52

11 Troubleshooting
26
Installation and maintenance instructions ENERGY 0020177746_03
10.13 Installing the gas-air mixture unit
1. Install the burner.
2. Install two new burner seals in the burner hood.
3. Install the gas-air mixture unit.
4. Tighten the screws on the gas-air mixture unit.
–
Ideally to 7 Nm if a torque spanner is available.
5. Install the flue pipe.
6. Install the air intake pipe.
10.14 Draining the product
1. Close the service valves of the product.
2. Start check programme P.05 (
→
Page 16).
Check programmes
–
Overview (
→
Page 30)
3. Open the drain cock.
10.15 Checking the admission pressure of the
expansion vessel
1. Measure the pre-charge pressure of the expansion ves-
sel at the vessel valve.
Conditions : Pre-charge pressure < 0.075 MPa (0.75 bar)
▶
Top up the expansion vessel in accordance with the
static height of the heating installation, ideally with ni-
trogen, otherwise with air. Ensure that the drain valve is
open when topping up.
2. If water escapes from the expansion vessel's valve, you
must replace the expansion vessel (
→
Page 28).
3. Fill and purge the heating installation. (
→
Page 18)
10.16 Completing inspection and maintenance
work
1. Check the CO
₂
content.
10.17 Checking the product for leak-tightness
▶
Check that the product is leak-tight. (
→
Page 20)
11 Troubleshooting
11.1 Rectifying faults
▶
If fault codes (F.XX) appear, refer to the table in the ap-
pendix or use the check programme(s).
Overview of fault codes (
→
Page 35)
Check programmes
–
Overview (
→
Page 30)
If several fault codes are generated at the same time, these
are displayed alternately followed by the time at which the
respective fault occurred.
▶
Hold the button down for more than 3 seconds.
▶
If you are unable to clear the fault code and it reappears
despite several fault clearance attempts, contact cus-
tomer service.
11.2 Calling up the fault memory
The last 10 fault codes are stored in the fault memory (to-
gether with the time at which the respective fault occurred
and, after 24 hours, with the number of days).
▶
Hold the button down for more than 7 seconds.
Overview of fault codes (
→
Page 35)
▶
Press the button to exit this menu.
11.3 Deleting the fault memory
1. Delete the fault memory using the diagnostics code
d.94 .
2. Set the diagnostics code. (
→
Page 15)
Overview of diagnostics codes (
→
Page 30)
11.4 Resetting parameters to factory settings
1. Reset all parameters to the factory settings using the
diagnostics code
d.96 .
2. Set the diagnostics code. (
→
Page 15)
Overview of diagnostics codes (
→
Page 30)
11.5 Preparing the repair work
1. Switch off the product.
2. Disconnect the product from the electrical installation.
3. Remove the front casing.
4. Close the gas stopcock.
5. Close the service valves in the heating flow and in the
heating return.
6. Close the service valve in the cold water pipe.
7. Drain the product if you want to replace water-bearing
components of the product.
8. Ensure that water does not drip on live components
(e.g. the electronics box).
9. Use only new seals and O-rings. Do not use any addi-
tional sealing materials.
11.6 Replacing defective components
11.6.1 Replacing the burner
1. Remove the gas-air mixture unit. (
→
Page 24)
2. Remove the two burner seals.
3. Remove the burner.
4. Insert the new burner.
5. Insert two new burner seals in the burner cover.
6. Install the gas-air mixture unit. (
→
Page 26)
11.6.2 Replacing the gas-air mixture unit
1. Remove the gas-air mixture unit. (
→
Page 24)
2. Install the new gas-air mixture (
→
Page 26).
11.6.3 Replacing the heat exchanger
1. Remove the front casing. (
→
Page 10)
2. Remove the gas-air mixture unit. (
→
Page 24)