VAI3-WN-I_EN - 07/14 - Vaillant
- 21 -
MAINTENANCE
EN
Fig. 12.7 Protective covers.
Legend
1 Service hole lid
2 Two and three-way valve covers
• Connect the unit and run it for a few moments checking that
it carries out its functions correctly (for more information see
the user manual).
12.4 Troubleshooting
If the event of a gas leak, proceed as follows:
• Recover the remaining refrigerant from the system.
-
You will need the correct refrigerant recovery unit and
refrigerant reclaim cylinder to achieve this.
a
WARNING!
Never release refrigerant into the environment!
Refrigerant R410A is a harmful product for the
environment.
• Check the flaring joins.
• Repair the leak, replace indoor and outdoor parts which are
the cause of the leak as necessary.
• Carry out the vacuum (section 12.2).
• Fill the unit with the correct weight of refrigerant using
accurate and calibrated electronic scales.
• Proceed to check for leakage as described above.
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