Ae" Indoor Unit: Water Circuit Error - Daikin ALTHERMA HT ERSQ 011 AA Service Manual

Troubleshooting by Indication on the Remote Controller
3.4

"AE" Indoor Unit: Water Circuit Error

AE
Remote Control
Display
Subcode 0
Applicable Models All indoor unit models
Method of
Malfunction
Detection
Malfunction
Decision Conditions
 Blocked waterflow or heat exchanger (waterside).
Supposed Causes
 The water circuit has a too high ESP (external static pressure).
Troubleshooting
146
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Is
YES
the waterflow or heat
exchanger blocked?
NO
Is the
NO
position of the 3-way
valves OK?
YES
Can be checked Make sure that:
(see A6 error) - all valves are open
- water pressure is OK
(0,3bar<P<3bar)
- all air is out of the system
- the waterfilter is clean
Re-install the 3-way valves
correctly
The water circuit has a too high
ESP compared to the maximum
allowed ESP (see technical
specs). Consider installing an
additional pump with higher
external static pressure in
combination with a balancing
bottle.
ESIE09-08A
Troubleshooting