Vaillant ecoMAX SERIES, Инструкция по установке и обслуживанию

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7 Servicing
8 Troubleshooting
Instructions for installation and servicing ecoMAX
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7.3 Recommissioning the boiler
• Carry out electrical safety checks.
• Turn on the electrical supply.
• Open the boiler CH service valves.
• Carry out function checks of boiler operation as pre-
viously detailed.
• Check gas rate as previously detailed.
• Check water soundness.
• Refit case, ensuring that a good seal is obtained.
7.4 Test
Carry out the following checks once the maintenance
tasks have been completed:
• Start the unit up according to the instructions supplied
with the appliance.
• Check the unit for any signs of escaping gas or water
leaks.
• Check the air/flue duct system for leaks and correct
attachment.
• Check for excess ignition and ensure that the flame
burns regularly and smoothly.
• Check the heating system and hot–water supply for
correct functioning.
• Complete the Benchmark log book.
Fig. 7.8 Test for correct functioning
8 Troubleshooting
8.1 Logical fault finding procedure
These checks must be carried out before attempting to
use the fault finding guide.
1. Carry out electrical safety checks (See Section
‘Preliminary Electrical Checks’).
2.Check that the external electricity supply to the boiler
is on, and a supply of 230 V~ is present between boiler
terminals ‘L’ and ‘N’.
3. Check that the gas supply to the boiler is on, that it
has been correctly purged and that an inlet pressure
of 20 mbar is available at the gas valve. (See Section
‘Gas Supply’).
4.Ensure the heating system is full of water and charged
to between 1 and 1.5 bar. If not, refill and vent the
system. (See Section ‘Filling the heating system’).
Ensure boiler flow and return service valves are open.
5.Check that the main on/off control is set to the ‘on’
position.
6.Set the central heating temperature to maximum.
7. Set the domestic hot water temperature to maximum
(ecoMAX 800).
8.Check that all external controls are on and calling for
heat (if, no external controls are fitted, boiler termi-
nals 3 and 4 must be linked). Check that the boiler
anti–cycling economiser is not engaged.
Fig. 8.1 Displaying of status codes
8.1.1 Status mode
The status mode provides information about the current
operating status of the boiler.
To display status mode proceed as follows:
• Press the ”i” button below the display, and a status
code will appear in the display indicating the current
operational status of the boiler (see table 8.1).
To cancel the status code mode proceed as follows:
• Press the ”i” button below the display or
• Do not press any key for approximately four minutes.
The display will now revert back to showing the cur-
rent flow temperature.
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83 41 77_12 GB04.04.qxd 22.09.2004 12:34 Uhr Seite 44