Rotex RKHBH016BB3V3 Manuel D'installation page 103

Error
code Failure cause
P4
Electric component failure
PJ
Failure of capacity setting
U0
Refrigerant failure (due to
refrigerant leak)
U2
Main circuit voltage failure
U3
Underfloor heating screed
dry-out program has been
stopped by another error, or by
pushing operation off button, or
by power failure.
U4
Communication failure
U5
Communication failure
U7
Communication failure
UA
Communication failure
RKHBH/X016BB
Indoor unit for air to water heat pump system
4PW62576-1 – 10.2010
Corrective action
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
The error can only be reset in
the test mode as follows:
First, press the z button 4 times
so the t icon will be
displayed. Then press the y
button 1 time. Finally push the
z button to exit the test mode.
Notes:
• In this case [F-09] "Latest
action number executed" will
contain the latest action
number executed.
• [F-08] "Underfloor heating
screed dry-out program
enabled (1)/disabled (0)" is
always cleared to 0 (disable).
This means that in case a
second time a "Underfloor
heating screed dry-out
program" must be started,
[F-08] needs to be set again.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Installation manual
49