Service manual

Error Codes: Outdoor Units ESIE03–01
3–54 Part 3 – Troubleshooting
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3.9 Malfunctioning HPS (H3)
Error code H3
Error generation The error is generated when there is no continuity in the high-pressure switch during compressor OFF.
Causes The possible causes are:
P Malfunctioning high-pressure switch
P Broken or disconnected high-pressure switch harness
P Malfunctioning high-pressure switch connector connection
P Malfunctioning outdoor unit PCB.
Troubleshooting To troubleshoot, proceed as follows:
Check the high pressure
switch (HPS).
Is the
HPS correctly
connected to the
outdoor unit
PCB?
Connect correctly
.
y Turn the power off and back on
again after 10 minutes.
y 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