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Note1 BC controller: Phenomena when LEV is connected wrongly (reverse connection of LEV1 and LEV3) to the
board.
Note2 Check method of LEV fully open of fully closed status
1
Check LEV opening (pulse) with the self-diagnosis monitor (Outdoor control board SW1).
Fully open
: 200pulse
Fully closed : 110pulse (In the case of heating-only mode, however, the pulse may become 110 or more.)
2
When LEV is fully open, measure the front and the rear temperature of the piping, and check that there
is no temperature difference.
3
When LEV is fully closed, check that there is no refrigerant flowing sound.
Note3 Refer to the chart below to judge LEV differential control and the opening with superheat control.
(BC controller LEV basic operation characteristic)
Phenomena
Cooling-main
Heating-only
Heating-main
Cooling-only
Non-cooling
SH12 small, SC11 small
SH16 small, branch pipe
SC small
BC controller sound
Non-cooling, non-heating
SH12 small, SC11 small
SH16 large, but branch pipe
SC small
BC controller sound PHM
large
Indoor heating SC small
PHM large
Non-cooling
Indoor heating SC small
PHM large
Operation mode
Heating-only
Heating-main
Cooling-main
Heating-only
Heating-main
Heating-only
Heating-main
Cooling-only
Cooling-main
Cooling-only
Cooling-main
Cooling-only
Cooling-main
Cooling-only
Cooling-main
Site
Malfunction mode
G·GA
type
GB
type
LEV1
LEV3
LEV3a
0.3~0.4MPa
SH12 < 20
0.3~0.4MPa
SC16 > 3
SH12 > 3
0.3~0.4MPa
SH22 < 20
SH22 > 3
Inclined to close
Inclined to open
Inclined to close
Inclined to open
Inclined to close
Inclined to open
High pressure (P1) – Intermediate pressure
(P3) is large.
High pressure (P1) – Intermediate pressure
(P3) is small.
SH12 is large.
High pressure (P1) – Intermediate pressure
(P3) is small.
SC16 and SH12 are small.
SH22 is large.
SH22 is small.
High pressure (P1) – Intermediate pressure
(P3) is large.
Content
Safety margin judgment standard
Содержание PURY-P200
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