Daikin GYEQ20AN, Руководство по обслуживанию

Страница: 105 / 245

SiAUY361411EA Control Overview
Control and Functionality 94
„
Normal startup
The outdoor unit follows the time chart on the right when starting up heating and cooling
operations. (Provided that the engine starts up (its speed exceeds 800 min
-1
) the first time the
starter is turned ON.)
„
Sequence applied when the engine fails to start up or the starter system is not
operating correctly
When the engine speed is 800 min
-1
or lower As shown at right, one cycle is completed by
turning on/off the starter as follows: ON (10 sec)
→
OFF (10 sec)
→
ON (6 sec)
→
OFF (10 sec)
→
ON (6 sec). The engine startup occurs at the time of [t1].
When the engine fails to start up (i.e., fails to exceed 800 min
-1
) at a third attempt within 2 hours,
the unit outputs an alarm and stops at the time of [t3]. (In checker mode, the unit outputs an
alarm and stops when the engine fails to start up at the first attempt.)
„
Sequence applied when no engine speed pulse is detected
When the starter system is not operating correctly (i.e., when no speed pulse is detected within
3 seconds after the starter is turned on), the unit enters into 4-minute standby mode when [t2] is
reached.
If this occurs at a third attempt within 2 hours, however, the unit outputs an alarm and stops (in
checker mode, it outputs an alarm and stops when this occurs at the first attempt).
Fan
Gas valve 2
Gas valve 1
Starter
Cooling water
pump
6 sec
.
1 sec
.
ON
ON
ON
ON OFF with an engine speed
of 800min
-1
or more
Synchronized operation with fan
025759-00E
Fan
Gas valve 2
Gas valve 1
Starter
6 sec
.
1 min
.
1 sec
.
ON
ON
ON
10 sec
.
10 sec
.
6 sec
.
6 sec
.
10 sec
.
t1
t3
025760-00E
Fan
Gas valve
Starter
1 min
.
4 min
.
1 sec
.
3 sec
.
6 sec
.
ON
ON
t1
t2
After purge
025761-00E