Worcester 24I RSF User Manual

Supplied By www.heating spares.co Tel. 0161 620 6677
With pressure above
minimum, remove Modureg
Lead. Does pressure drop to
minimum?
33
Is minimum pressure
observed at burner at all
times?
Modulating Valve Check
Flow Switch Check
GO TO
CHECK I
YES
YES
GO TO
CHECK I
YES
YES
NO
NO
HARNESS OK
YES
YES
NO
NO
NO
NO
Is pressure at burner
always the same?
Is resistance
nominally 125ohms?
Does voltage
go above 6.25V?
Faulty PCB.
Replace
Reconnect X6 and measure
voltage across modulating
valve during operation
Gas valve OK
Remove X6
Close all taps to set no
domestic flow
Faulty flow switch.
Replace
Faulty flow switch.
Replace
Is short circuit observed
at X6 pins 1 & 2?
Is open circuit observed
at X6 pins 1 & 2?
Open a tap fully to set
domestic flow
Flow Switch OK
Faulty modulating valve .
Replace gas valve
Remove X6, measure
resistance between
pins 15 & 16
N
YES
NO

Worcester 24I RSF Specifications

General

Model	24I RSF
Category	Boiler
Output	24 kW
Fuel Type	Natural Gas
Mounting	Wall-mounted
Warranty	2 years
Type	Regular
Hot Water Flow Rate	11 L/min