GB-30
troubleshooting guide
Repairs should only be carried out by a qualified technician in
strict accordance with current local and national safety regula-
tions. Unauthorised or incorrect repairs could cause personal
injury or damage to the unit.
fault code
Codes
Possible Causes
Remedy
E1
Water tap is not turned
on.
Turn on the water tap.
Low water pressure
(<0.04MPa)
Turn on the water tap and
ensure full opening posi-
tion.
Flow meter is broken.
Disconnect from the
mains.
Disconnect the water
inlet.
Call a qualified techni-
cian.
•
•
•
The wire terminals which
connect the flow meter
are loose.
E3, E6,
E7
The temperature sensor
is broken.
Heater element is bro-
ken.
The wire terminal con-
nected to the heater is
loose.
The wire terminal con-
nected to the tempera-
ture sensor is broken.
The wire terminal con-
nected to the tempera-
ture sensor is short cir-
cuited or open circuited.
E4
The tank is leaking.
The hose is leaking.
The float switch is broken
or PCB is faulty.
