Low Outdoor Air Temperature Protection Control - Daikin ERQ Series Service Manual

ESiEN09-06 A
6.4

Low Outdoor Air Temperature Protection Control

Objective In cooling (or fan operation) or heating, if outdoor air is low in temperature, stop the fan forcibly.
Details
[Cooling and fan operation]
Turn OFF the fan for a period of 60 minutes at a suction temperature of 5 C or lower.
In order to monitor the outdoor air temperature, however, turn ON the fan for a period of one
minute and turn OFF the fan again at a temperature of 5 C or lower after the said timer
completes the operative period.
Reset the 60-minute timer when the fan stops running.
[Heating]
Turn OFF the fan for a period of 60 minutes at a suction temperature of –5 C or lower.
In order to monitor the outdoor air temperature, however, turn ON the fan for a period of one
minute and turn OFF the fan again at a temperature of –5 C or lower after the said timer
completes the operative period.
Reset the 60-minute timer when the fan stops running.
* The thermostat will not turn ON in one minute due to the temperature while the fan stops.
Function
This control shall be disabled at test run both in cooling and heating. (The test run shall be
conducted first.)
Outline of Control
47