Honeywell SG150D Notice De Montage page 11

11. Troubleshooting
Problem
SG150 and SG150D
Drips
Check valve does not close off
tightly in the front pressure area
Too little or no water pressure
SG150D only
Water is escaping from the spring
bonnet
Too little or no water pressure
The outlet pressure set does not
remain constant
MU1H-1355GE23 R1012
GB
Cause
During the heating up of the water heater no error, normal function
Continually drips from soiling
Pressure increase in the front pres-sure
area
Seal surfaces dirty or worn
Cut-off fixtures before or after the safety
group not opened entirely
Safety group not installed in the flow
direction
Diaphragm in valve insert is faulty
Pressure reducing valve is not set to the
desired outlet pressure
Filter in pressure reducing valve is conta-
minated
Filter in pressure reducing valve is conta-
minated or worn
Valve insert, sealing ring or edge of
nozzle is contaminated or worn
Rising pressure on outlet (e.g. in boiler) Check check valve, safety group etc.
Expansion water from the hot water puri-
fier
11
Remedy
Actuate lifting grip multiple times so that dirt
particles are flushed out, or replace as neces-
sary
Replace check valve
Replace check valve
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
Inspect ckeck valve 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