SBM XFR Series Installer's Instructions page 26

 Problems on a group of heaters.
Module displays :
Check setpoint and
programming of the
module
Safety switch
activated or
Override ON
with mode OFF :
Heating off
A GROUP OF HEATERS DO
NOT SHUT OFF
Check control
module position
set OFF :
Check zero voltage
At module output
Check solenoid valve
operation, orientation
and cleanness
Where faulty, replace
the corres ponding part
A GROUP OF HEATERS
DO NOT LIGHT
No spark
Control module
ON
Module displays :
Check power supply
Check module heaters
If module is supplied,
output voltage (230V)
during ignition cycle
(45 seconds)
If no voltage, replace
module
Check voltage at first
RP3-RP32 input
Check cleanness of :
- main gas filter
If no voltage, check :
- solenoid valves
- electrical cable
- regulators/governors
- connections
gas inlet filters
Check RP3-RP32
fuses
Replace BA blocks
Control module
Check main gas valve
OFF
(Main breaker)
Solenoid valve open
Check gas tank or
gas supply pressure
replace module
Check gas flow
throught the injector
«click»
Replace BA blocks
First, check compatibility
of heaters with the gas
type and pressure.
Spark
open
Solenoid valve closed
Check module
solenoid valves output
voltage (230V)
blocks
If no voltage, replace
("click" ?)
module
No «click»
Check voltage at
solenoid valve
If solenoid valve is
supplied, replace it
26