Daikin EWWQ-AJYNN Service Manual page 85

ESIE07-05
2.22.2 Pressure ratio alarm delay
Function Delay time before the unit goes into pressure ratio alarm.
description
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Pressure Ratio Alarm
Start-Up Delay
Run Delay
2.22.3 High Oil DP Alarm
Function When the pressure drop across the oil filter becomes too big (higher than 2.5 bar) the unit will shut
description down and generate the high oil DP alarm.
Alarm activates when DP is higher than 2.5 bar (default) for 20 seconds (default).
High Oil DP Alarm
Setpoint
Delay
Part 2 – Functional Description
start up delay: At start up the unit will start to check the pressure ratio after the 180 seconds start
up delay timer.
run delay: When the unit is in operation, the pressure ratio can be below the setpoint for a
specified time before the unit will trip on pressure ratio alarm.
HP
180 s
90 s
Oil Pressure sensor
Oil Filter
(inside compressor)
DP = (HP – oil pressure)
2.5 bar
20 s
Functional Control
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