ESIE02–01 Error Codes: Outdoor Units
Part 3 – Troubleshooting 3–47
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4
5
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3.7 Malfunctioning HPS (H3)
Error code H3
LED indications The table below shows the LED indications.
Error generation The error is generated when there is no continuity in the high-pressure switch during compressor OFF.
Causes The possible causes are:
■ Malfunctioning high-pressure switch
■ Broken or disconnected high-pressure switch harness
■ Malfunctioning high-pressure switch connector connection
■ Malfunctioning outdoor unit PCB.
Troubleshooting To troubleshoot, proceed as follows:
Operation HAP (green) H1P (red) H2P (red)
Normal 688
Malfunction 677
Check the high pressure
switch (HPS).
Is the
HPS correctly
connected to the
outdoor unit
PCB?
Connect correctly.
Ÿ Turn the power off and back on
again after 10 minutes.
Ÿ Check the continuity of the HPS
for control and safety.
No
Yes
Does
this HPS have
continuity?
Replace HPS
without continuity.
No
Yes
Replace outdoor
unit PCB
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