Daikin Altherma EKHBH Series, Service Manual

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Outdoor Unit Functional Concept ESIE06-03
2–24 Part 2 – Functional Description
3
1
2
4
5
Detail The followings are the examples of control which function in each mode by the electronic expansion
valve control.
3.11.1 Fully Closing with Power ON
Initialize the electronic expansion valve when turning on the power, set the opening position and
develop pressure equalizing.
Fully closed when power is turned ON
Open control when starting
(Control of target discharge pipe temperature)
Pressure equalizing control
Open control when starting
(Control of target discharge pipe temperature)
(Defrost control FD=1)
Pressure equalizing control
Open control when starting
Pressure equalizing control
When power is turned ON
Cooling operation
Stop
Heating operation
Stop
Heating operation
Control of discharge pipe thermistor
disconnection
Stop
×
{
{
×
{
{
×
×
{
×
×
×
×
{
×
×
{
×
×
×
×
×
Control when frequency changed Control for abnormally high discharge pipe temperature
Operation pattern
(only for heat
pump model)
{
: function
×
: not function
(only for heat pump model)
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