Preheating Operation Control - Daikin SkyAir Service Manual

SiBE28-804

1.15 Preheating Operation Control

Outline After the compressor has been turned off, the preheating operation will be activated in order to
avoid refrigerant from dissolving in the compressor oil.
Trigger
conditions
Starting conditions
Ending conditions
Functional Description
RZQ71C7, RZQS71·100C7V1B
• Compressor stopping
{
• Less than 6 hours duration after turning on the power.
{
&
• Longer than 1 hour elasped after shutting down the compressor.
{
or
• Outside temperature is not declining.
&
• Discharge pipe temperature < 70˚C
• Operation of thermostat is established
{
• Longer than 6 hours elasped after turning on the power.
{
&
• Less than 1 hour duration after shutting down the compressor.
{
&
• Outside temperature is declining.
or
• Discharge pipe temperature > 75˚C
General Functionality
51