Easy-Kleen AS152E Alternate Spec Owner's Manual page 39

PROBLEM
Magnet fouled and will not move
Reed switch activates when
tested with external magnet
Reed switch misadjusted
Magnet is bad
Reed switch does not
Reed switch is bad
activate when tested with
external magnet
Problem elsewhere in system
PROBLEM
Thermostat set improperly Thermostat set too low
Boiler fires when thermostat
jumped, but will not fire with
Thermostat bad
thermostat in circuit
Boiler will not fire when
Problem elsewhere in system
thermostat jumped
PROBLEM
Connections loose or corroded
Electrical continuity through
switch
Problem elsewhere in system
No continuity through switch Switch bad
PROBLEM
Fuel level low Switch may be operating properly
Level sensor stuck
Fuel level proper
Reed switch bad
BOILER SYSTEM DIAGNOSTICS - Flow Switch - Optional
POSSIBLE CAUSE
If magnet does not move freely within its housing, remove debris to unstick it.
To adjust it for the flow the system is producing, loosen the reed switch and move it in its
If reed switch activated the boiler when tested with a hand held magnet, the internal magnet may
If reed switch does not activated the boiler when tested with a hand held magnet, the reed
switch may need replacement.
See diagnostics listed above.
BOILER SYSTEM DIAGNOSTICS - Thermostat
POSSIBLE CAUSE
Set thermostat properly and ensure connections are not loose or corroded.
Replace Thermostat.
Continue with boiler control diagnostics. If boiler still does not fire, the thermostat may need
replaced.
BOILER SYSTEM DIAGNOSTICS - High Temperature Limit
POSSIBLE CAUSE SOLUTION
Check connections to high temperature limit switch to ensure that they are not loose or
corroded.
If there is continuity through the switch but the boiler still does not fire, there is a problem
elsewhere in the system. Continue with boiler control diagnostics.
Replace switch.
BOILER SYSTEM DIAGNOSTICS - Low Fuel Shut-Off
POSSIBLE CAUSE
Add fuel and retest.
Check level sensor for proper movement. Clear, repair, or replace sensor assembly.
Check level sensor for proper action. Replace switch if needed.
SOLUTION
SOLUTION
SOLUTION
Rev. 17/10/2016