0307SCA0AMEN
19/26
9.0 FAULT FINDING
9.1 Main fault finding chart - Lock-out indicator light is "OFF", but air heater will not operate
WARNING
: Fault finding may only be carried out by appropriately qualified persons
no
yes
yes
no
no
yes
yes
no
no
yes
no
yes
no
yes
yes
no
no
yes
no
yes
yes
Is there continuity
between terminals 8 & 7
Check electronic
ignition control
Is there a restriction in the
flue pipe or inlet grill
Is the wheel dirty
Determine what caused the
limit to trip
Place into normal operation
Check the mains
Check the time/tempeature
control
Is there 230V between
8 & N ?
Is power venting
operating?
Reset limit control
Check venter motor
Replace pressure switch
Is the thermostat above
room temperature and if
used is the time clock"ON"
Set thermostat above room
temperature & if used make
certain the time clock is ON
Is there continuity
between 7 & 9?
Does the power venter
operate?
Is there 230V between
L&N?
Is there 230V between
1 & N ?
Check pressure switch
Connect or replace tubing
Correct fault
Is the pressure tubing
connected & in sound
condition?
Clean the venter wheel
Содержание SCA 100
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