Panasonic Aquarea WH-SXC09H3E5 - Checking the Pressure Relief Valve; Conducting Visual Checks on the Pcbs and Terminals; Cleaning the Strainers

196 Aquarea air-to-water heat pumps - Planning and installation manual - 02/2022
Maintenance
7
7.2 Checking the pressure relief valve
Carry out the following steps:
1. Set the lever (2) of the pressure relief valve (1) located in the indoor unit or mono-bloc unit
(→ 4.6.2.1 Components (bi-bloc systems), p. 29, → 4.6.3.1 Components (mono-bloc
systems), p. 52) to the horizontal position (3 – open).
2
3
1
1 Pressure relief valve
2 Lever
3 Setting horizontal in the opening position
Air or uids should now be heard escaping. If this is not the case, contact an authorised
dealer.
2. After a few seconds, set the lever of the pressure relief valve back to the home position
(closed).
7.3 Conducting visual checks on the PCBs and terminals
Carry out the following steps:
1. Carry out a visual inspection of the PCBs and terminals for loose connections, damaged
cable insulation etc.
2. Repair any deciencies and defects.
7.4 Cleaning the strainers
Carry out the following steps for a regular strainer:
1. If mounted, close the shut-o󰀨 valve before and after the strainer.
2. Open the strainer using a spanner. Remove the inserted straining element and ensure that
the meshes of the straining element are not damaged.
3. Rinse out the straining element with tap water. Remove any stubborn dirt using a soft brush.
4. Replace the straining element in the strainer and close the strainer using the spanner.
5. Open the shut-o󰀨 valve again.