Rotex HPSU compact 304 Installation And Maintenance Manual

8 x Errors, malfunctions and messages
FA ROTEX HPSU compact 4 - 06/2015
55
E198 —
Flow measure-
ment not plausible
Flow sensor FLS,
3-way diverter valve
3UVB1
Error occurs if the 3-way diverter valve 3UVB1 is in the Bypass po-
sition, the device-internal circulation pump is running, but the vol-
umetric flow measurement is too low.
Minimum water flow required:
– operating mode "Heizen": 600 l/h
– operating mode "Kühlen": 840 l/h
– Automatic defrosting function ( ) active : 1020 l/h
– Air in heating system.
Ɣ Vent.
– Device-internal circulation pump not running.
Ɣ Ch
eck electrical connection and control settings. If the
circulation pump is defective, replace it.
– Flow sensor FLS contaminated, blocked.
Ɣ Check, clean.
– Flow sensor FLS defective.
– Valve drive for 3-way diverter valve 3UVB1 defective.
Ɣ Ch
eck, replace.
E200 —
Communication
faul
t
Electrical components
Modbus communication between Ro
Con BM1 and switchboard
A1P is disrupted.
– Check RTX-AL4 switch board.
– Cabling or connections, poor contact.
Ɣ Check, replace
E8005 —
Water pressure in
the heating system
too low
Pressure sensor DS
Water pressure has fallen below the minimum permissible value.
– Too little water in the heating system.
Ɣ Check heating system for leakage, refill water.
– Pressure sensor DS defective.
Ɣ Ch
eck, replace.
E8100 — Kommunikation Electrical components
Modbus initialisation also failed after heat pump start-up.
Circuit board A1P defective.
Ɣ Ch
eck, replace.
E9000 —
Temporary internal
message
—
Not relevant to proper system operation.
W8006 —
Pressure loss
wa
rning
Pressure sensor DS
Warning message: Maximum permissible pressure drop
exceeded.
Too little water in the heating system.
Ɣ Check heating system for leak
age, refill water.
W8007 —
Water pressure in
the heating system
too high
Warning message: Water pressure has exceeded the maximum
permissib
le value.
– Membrane expansion vessel defective or incorrect pressure
set.
Ɣ Ch
eck, replace.
– Setting for the [Max Druck] parameter too low.
Î If necessary, set parameter. If setting is correct, drain
water to reduce the system pressure.
Tab. 8-2 Error codes on the main control unit of HPSU compact
Respect the maximum tightening torque of the temper-
ature sensor (see chapter 10.3 "Tightening torque").
Code Malfunction /
Error messageg
Component/Designation Causes and possible error correction
Display Internal

Rotex HPSU compact 304 Specifications

General

Brand	Rotex
Model	HPSU compact 304
Category	Controller
Language	English