Daikin RZP140DTAL [169/255] Malfunction of high pressure switch system

Daikin RZP140DTAL [169/255] Malfunction of high pressure switch system
Troubleshooting by Remote Controller Display / LED Display SiE25-110
160 Troubleshooting
6.22 Malfunction of High Pressure Switch System
Remote
Controller
Display
H3
Outdoor Unit LED
Display
A 5 1 4 2 4 3 3 4 3
Applicable
Models
RZP71~140D
Method of
Malfunction
Detection
The protection device circuit checks continuity in the high pressure switch.
Malfunction
Decision
Conditions
When there is no continuity in the high pressure switch during compressor stops operating
Supposed
Causes
Incomplete high pressure switch
Disconnection in high pressure switch harness
Faulty connection of high pressure switch connector
Faulty outdoor unit PC board
Disconnected lead wire
Troubleshooting
Replace HPS with no continuity.
Resistance in normal operation :
10 or less
Wait for 10 minutes after
the unit stops operating,
then check the following.
Is there
continuity in each
protection HPS?
Replace the outdoor unit PC board.
Replace the lead wire.
NO
Connect correctly.
Is
protection HPS
connector (*1) correctly
connected to outdoor
unit PC board?
NO
YES
YES
YES
Is there continuity
in lead wire?
NO
*1 Connector symbol
RZP71 ~140D : X60A
(S2587)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.

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