E3" Outdoor Unit: Actuation Of High Pressure Switch - Daikin R-410A Service Manual

SiBE39-402A

4.15 "E3" Outdoor Unit: Actuation of High Pressure Switch

E3
Remote
Controller
Display
Applicable
AII outdoor unit models
Models
Method of Abnormality is detected when the contact of the high pressure protection switch opens.
Malfunction
Detection
Malfunction
Error is generated when the HPS activation count reaches the number specific to the operation
Decision mode.
Conditions
! Actuation of outdoor unit high pressure switch
Supposed
! Defect of High pressure switch
Causes
! Defect of outdoor unit PC board
! Instantaneous power failure
! Faulty high pressure sensor
Troubleshooting
H1: Actuation of high pressure switch (HPS)
• Is the outdoor unit heat exchanger dirty?
• Defect of outdoor fan
• Is the refrigerant over-charged?
• Faulty high pressure sensor
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Are the
HPS connectors
connected to the outdoor main
P.C.Board (A2P)?
H1
YES
Contact S1PH is open.
NO
Operation is
normal when turned on
again by remote
controller.
NO
Troubleshooting by Indication on the Remote Controller
NO
YES
YES
Connect the connector and
operate again.
Actuation of high pressure switch.
H1
There was an instantaneous
power failure or a past safety
device actuated.
Re-check refrigerant system.
Replace outdoor unit PC board
A2P.
(V3065)
127