
MU1H-1034GE23 R1109
7
Honeywell GmbH
GB
9. Troubleshooting
Problem
Cause
Remedy
Beating sounds
Pressure reducing valve is too
large
Call our Technical Customer Services
Water is escaping from the spring
bonnet
Diaphragm in valve insert is faulty
Replace valve insert
Too little or no water
pressure1109
Shutoff valves up- or downstream of
the pressure reducing valve are not
fully open
Open the shutoff valves fully
Pressure reducing valve is not set to
the desired outlet pressure
Set outlet pressure
Filter in pressure reducing valve is
contaminated
Clean or replace filter
Pressure reducing valve is not fitted in
flow direction
Fit pressure reducing valve in flow
direction (note direction of arrow on
housing)
The outlet pressure set does not
remain constant
Filter in pressure reducing valve is
contaminated or worn
Clean or replace filter
Valve insert, sealing ring or edge of
nozzle is contaminated or worn
Replace valve insert
Rising pressure on outlet (e.g. in
boiler)
Check check valve, safety group etc.
10. Spare Parts
Pressure Reducing Valve D05FS, from 2007 onwards
11. Accessories
No.Description
Dimension Part No.
1
Spring bonnet
complete with
setting scale
1
/
2
" - 1"
0901515
1
1
/
4
" - 2"
0903890
2
Valve insert
complete (without
filter)
1
/
2
" - 1"
D05FA-1/2B
1
1
/
4
" - 2"
D05FA-11/4B
3
Replacement filter
insert
1
/
2
" - 2"
ESD05FS
4
Blanking plug with
O-ring R
1
/
4
" (5
pcs.)
1
/
2
" - 2"
S06K-1/4
M38K Pressure gauge
Housing diameter 50 mm, below connection
thread
G
1
/
4
". Ranges: 0 - 4, 0 - 10, 0 - 16 or 0 - 25 bar.
Please indicate upper value of pressure range
when ordering
ZR06K Double ring wrench
For removal of spring bonnet
VST06-A Connection set
Threaded connections
VST06-B Connection set
Solder connections