Buderus 500 - 24/C, Руководство по обслуживанию

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Diagnosis 6
We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk
22 Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006
step 30
Is there any indication on the DBA control panel display? Yes:
→
step
33
No:
→
step
31
step 31
Replace the pump, see box 101.
→
step
32
step 32
Replace fuse again, see box 62.
→
step
33
step 33
Turn the operating switch on the DBA control panel of the boiler to position “0” (OFF), see box 43.
step 34
Connect the power supply plug of the fan in reverse.
step 35
Turn the operating switch on the DBA control panel of the boiler to position “1” (ON), see box 55.
step 36
Is there any indication on the DBA control panel display? Yes:
→
box
42
No:
→
step
37
step 37
Replace fan, see box 76.
→
step
38
step 38
Replace fuse again, see box 62.
→
box
42
box 22
No (or insufficient) hot water, radiators, convectors, etc. may be heated without current heat requirement.
step 1
Set the operating switch on the boiler DBA control panel to position “0“ (OFF), see box 43, and set the other
DBA control panel operating switch to position “1“ (ON), see box 55.
step 2
Open a hot water tap.
step 3
Check that the hot water pipe directly beneath the (external) storage-type water heater warms up.
step 4
Does the pipe warm up (to approx. 60 °C)? Yes:
→
step
5
No:
→
step
39
step 5
The cause of this fault does not lie with the boiler, but with the mains water supply. Check to see if the
MCW inlet and DHW outlet have been incorrectly connected to the (external) storage-type water heater.
step 6
Are the pipes connected correctly? Yes:
→
step
8
No:
→
step
7
step 7
Connect the pipeworks correctly.
→
box
42
step 8
Close the shut-off valve in the MCW inlet and open a hot water tap at random to see if water is still flowing.
step 9
Is this the case? Yes:
→
step
10
No:
→
step
11
step 10
The cause is a defective (thermostat-controlled) mixer tap, a thermostat-controlled mixer valve or a short
circuit between the hot- and cold water circuits.
→
box
42
step 11
Check to see if any other external part of the drinking-water system is a possible cause.
step 12
Are such items detected? Yes:
→
step
13
No:
→
box
42
step 13
Place the affected components out of service.
→
box
42
step 14
Check
to ensure that the pre-adjusted setting corresponds to the hot water
[60)
box 14 supply.
to ensure that the DHW temperature is adjusted to a high enough setting, see box 61.
to see if the hot water supply has been shut off by the control system (ModuLink 250 RF).
step 15
Are the adjustment settings in order? Yes:
→
step
17
No:
→
step
16
step 16
Adjust the settings.
→
box
42
step 17
Check to see if the “hot water mode” indicator (
H
) or (
I
) lights up on the display, see box 11.
step 18
Does the “hot water mode” indicator (
H
) or (
I
) light up? Yes:
→
step
25
No:
→
step
19
step 19
Check the turbine flow-meter, see box 104, or DWH temperature sensor of any external storage-type water
heater that might be fitted.
box 21