Daikin RZQ125B7W1B [221/326] Malfunctioning hps system h3

Daikin RZQ71B8V3B [221/326] Malfunctioning hps system h3
ESIE05-03 Error Codes: Outdoor Units
Part 3 Troubleshooting 3–73
33
4
5
1
3.10 Malfunctioning HPS System (H3)
Remote Controller
Display
H3
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
P Incomplete high pressure switch
P Disconnection in high pressure switch harness
P Faulty connection of high pressure switch connector
P Faulty outdoor unit PC board
P Disconnected lead wire
Troubleshooting
Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.
Wait for 10 minutes after
the unit stops operating,
then check the following.
Connect correctly.
Replace HPS with no continuity.
Resistance in normal operation :
10 or less
Replace the lead wire.
Replace the outdoor unit PC
board.
Is there
continuity in each
protection HPS?
NO
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
RZQ71 : X60A (A2P)
RZQ100 ~ 140 : X32A (A1P)
ESIE05-03.book Page 73 Wednesday, April 6, 2005 4:09 PM

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