ESIE13-03
|
Part 2. Troubleshooting
4. Component checklist
13/05/15
|
Version 2.0
Page 63
Ground source heat pump
9. If it is not possible to pressurize the expansion vessel or when water/brine leaks from the Schrader valve, the internal bellow
is leaking; refer to
"Replacing the water expansion vessel" on page 123
"Replacing the brine expansion vessel" on
.
4.6. Brine flow switch S1L
1. Switch off the Daikin Altherma GSHP via the user interface.
2. Drain the brine circuit, refer to
"Draining the brine circuit" on page 86
3. Loosen the brine flow switch nut.
4. Remove the brine flow switch and check that the paddle can move without applying force.
5. If the paddle is obstructed, the brine flow switch must be replaced.
Technical specification
Description
The brine flow switch has a normally open contact. The brine flow switch contact
closes when the brine flow equals or exceeds 25 l/m.
The brine flow switch is a mechanical switch that
is switched on or off in response to the flow or
non-flow of the brine in the brine circuit. The brine
flow switch operates through the use of a paddle
which gets displaced due to the force of brine
moving past it.
Location
Piping diagram
Switch box
Unit
Check procedure
Mechanical check
INSIDE OF UNIT - FACTORY INSTALLED
PLIED
(*)
P
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