Daikin EWYQ230DAYN [397/524] Reversing valve

Daikin EWYQ180DAYN [397/524] Reversing valve
ESIE06-05 Functional Control for a Standalone Unit
Part 2 – Functional Description 2–171
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3.23 Reversing valve
This digital output function allows switching a reversing valve.
REMOTE COOL/HEAT:
Digital input open = Heating
Digital input closed = Cooling
Remark : if remote cooling/heating is chosen by digital input then it is not possible any more to change
by controller or via Supervisor system.
Four way valve relay is:
-energized during heating mode
-not energized during cooling mode.
When switching cooling <--> heating during operation :
1 Thermostat OFF
2 Restart unit + change status of 4 way valve (by (de) energizing the relay).
The four way valve status is changed at the same time of compressor start-up.

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