Daikin RY50G - Malfunction of High Pressure Switch

Si-71A Troubleshooting by Remote Controller Display / LED Display
Troubleshooting 113
6.15 Malfunction of High Pressure Switch
Remote Controller
Display
+6
+6+6
+6
Outdoor Unit LED
Display
A(H1P)
ñ
1(H2P)
ò
2(H3P)
ò
Applicable Models
R(Y)
Method of
Malfunction
Detection
Continuity of the high pressure switch is detected by the safety device circuitry.
Malfunction
Decision
Conditions
When the compressor is off and the high pressure switch doesn’t have continuity
Supposed Causes
„
Failure of high pressure switch
„
High pressure switch’s harness is broken or disconnected
„
Failure of high pressure switch’s connector connection
„
Failure of outdoor unit PC board
Troubleshooting
Check the following
after letting rest for 2
or 3 minutes.
Do
the HPS's
for control and
safety have
continuity?
NO
YES
Connect correctly
Replace HPS without
continuity.
Replace outdoor unit PC board.
Are
HPS's
for control
and safety
connected to the
outdoor unit PC
board?
NO
(SF017)
YES