Uh" Malfunction Of System, Refrigerant System Address Undefined - Daikin ALTHERMA HT Service Manual
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Also See for ALTHERMA HT:
- User manual (12 pages) ,
- Installer's reference manual (296 pages)
Table of Contents
Troubleshooting by Indication on the Remote Controller
3.63 "UH " Malfunction of System, Refrigerant System Address
Undefined
UH
Remote Control
UH
Display
AII indoor unit models
Applicable
All outdoor unit models
Models
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Improper connection of transmission wiring between outdoor unit and outdoor unit outside
Supposed
Causes
Defect of indoor unit PC board (A1P)
Defect of outdoor unit PC board (A1P)
Troubleshooting
installation or after an indoor
208
subcode 0
control adapter
Be sure to turn off power switch before connect or disconnect
connector, or parts damage may be occured.
Caution
Is
electricity
being introduce for
the first time after
YES
or outdoor unit PC
board has been
replaced?
NO
Is
indoor -
NO
outdoor
transmission wiring
normal?
YES
Does a
"UH " malfunction
NO
occur without
subcode "0"?
YES
Does a
malfunction occur
even after 12 minutes
elapses from the time when
electricity is introduced
to indoor and
outdoor
unit?
YES
ESIE09-08B
NO
Normal
Fix incorrect wiring,
push and hold the RESET
button on the master outdoor
unit PC board for 5 seconds.
Replace indoor unit PC board (A1P).
Replace outdoor unit PC
board (A1P).
Troubleshooting
(V2831)
Table of Contents
Troubleshooting
