H3" Malfunctioning Hps System - Daikin SkyAir Service Manual

SiBE28-804

5.25 "H3" Malfunctioning HPS System

H3
Remote
Controller
Display
Applicable RZQ(S)71~140
Models
Method of The protection device circuit checks continuity in the high pressure switch.
Malfunction
Detection
Malfunction When there is no continuity in the high pressure switch during compressor stops operating.
Decision
Conditions
Supposed
Causes
Troubleshooting
Troubleshooting
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
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Is
protection HPS
connector (*1) correctly
connected to outdoor
unit PC board?
YES
Wait for 10 minutes after
the unit stops operating,
then check the following.
Is there
continuity in each
protection HPS?
YES
Is there
continuity in lead
wire?
YES
*1 Connector symbol
RZQ71 ~ 140C7,
RZQS71~140C7
Troubleshooting by Remote Controller Display / LED Display
NO
NO
NO
X32A (A1P)
Connect correctly.
Replace HPS with no
continuity.
Resistance in normal
operation :
10Ω or less
Replace the lead wire.
RZQ71C7, RZQS71·100C7
Replace the outdoor inverter PC
board (A2P).
RZQ100~140C7,
RZQS125·140C7:
Replace the outdoor PC board
(A1P).
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