YES
661
NO
YES
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
Output temp down
(After 60 sec.)
Check power
=< Min. BTU
Valve E Off
Valve F Off
Capacity check
=< Max. BTU
Flow sensor
=< 8.45GPM
Valve C Open
Start
Safety function
Capacity Check
=> Max. BTU
Flow sensor
=> 8.45GPM
Valve C control
Valve C Close
Capacity Check
=< Max. BTU
Flow sensor
=< 8.45GPM
Valve C control
Check power
=< Mid. BTU
Valve E On
Valve F Off
Valve E On
Valve F On
Thermocouple
=> 1mV
Thermocouple
=< 10mV
Thermocouple
=> 1mV
Thermocouple
=< 10mV
Fan speed up
=>15%
Display: 101
Max burning power: 12
Thermocouple
=< 12mV
Fan speed up 3%
*13
Abnormal fan rotation
(=<1000rpm)
when differential =>±
200rpm with setting
Abnormal burning
E
D