Troubleshooting - Honeywell SG150 Installation Instructions Manual

10. Disposal
• Dezincification resistant brass housing
• Brass threaded connections
• Stainless steel filter mesh on pressure reducing
valve
• Transparent synthetic material filter bowl on pres-
sure reducing valve
• High grade synthetic material pressure reducing
valve insert, spring bonnet with adjuster knob,

11. Troubleshooting

Problem
SG150 and SG150D
Drips
Backflow stopper does not close
off tightly in the front pressure
area.
Too little or no water pressure Cut-off fixtures before or after the
only SG150D
Water is escaping from the
spring bonnet
Too little or no water pressure Pressure reducing valve is not set to
The outlet pressure set does not
remain constant
MU1H-1355GE23 R0907
GB
Cause
During the heating up of the water
heater
Continually drips from soiling
Pressure increase in the front pres-
sure area
Seal surfaces dirty or worn
safety group not opened entirely
Safety group not installed in the flow
direction
Diaphragm in valve insert is faulty
the desired outlet pressure
Filter in pressure reducing valve is
contaminated
Filter in pressure reducing valve is
contaminated or worn
Valve insert, sealing ring or edge of
nozzle is contaminated or worn
Rising pressure on outlet (e.g. in
boiler)
Expansion water from the hot water
purifier
11
shutoff valves, test socket, check valve, safety valve
insert and drain connector
• Fibre-reinforced NBR diaphragm
• NBR seals
• EPP insulation shells
Observe the local requirements regarding
correct waste recycling/disposal!
Remedy
no error, normal function
Actuate lifting grip multiple times so that dirt
particles are flushed out, or replace as
necessary
Replace backflow stopper
Replace backflow stopper
Open the shutoff valves fully
Install safety group in flow direction
(observe arrow direction on housing)
Replace valve insert
Set outlet pressure
Clean or replace filter
Clean or replace filter
Replace valve insert
Check check valve, safety group etc.
Inspect backflow stopper before the hot
water purifier and single-lever mixing valve
if necessary.
Close shut-off valves to the hot water puri-
fier supply line. Open hot water tap connec-
tion. Does pressure remain constant?
Expansion water of the hot water purifier.
Does pressure increase? Pressure reducer
defect.
Honeywell GmbH