6-3 PUMP DOWN METHOD
6-3-1 START AND STOP OF THE PUMP DOWN
6-3-2 A FLOW CHART OF PUMP DOWN
06-09
OUTDOOR UNIT
6 minutes or longer have elapsed since pump down
started or discharge pressure 3.0MPa or greater
(1) If the following condition is satisfied, pump down operation will start.
When the operation mode is stopped and pump down DIP-SW 1-3 turns OFF ON.
Operation mode
" STOP "
Stand by
Electronic expansion valve 1/2
: 500 pulse
Compressor 1 3 " ON "
Compressor 1 3 " OFF "
( Error )
DIP-SW " ON " +30sec
DIP-SW " OFF "
DIP-SW " ON "
DIP-SW
" OFF "
(2) Pump down operation stops immdiately in the following cases.
When pump down DIP-SW is turned ON OFF
When the discharge pressure sensor detects a pressure higher than 3MPa.
INDOOR UNIT
RB unit
: Fully opened
Electric expansion valve
Discharge valve (SVD) : Open
Suction valve (SVS) : Open
Bypass valve (SVB1) : Close
Indoor fan motor (SVB2) : Open
No
Yes
Indoor fan motor : OFF
Operation stops
RB unit
Discharge valve (SVD) : Close
Suction valve (SVS) : Open
Receiving start signal
of pump down
Receiving finish
signal of pump down
To Next Page
Loading...
Need help?
General
