Slant/Fin user service Bobcat Model B-120Aand B-200A

11 Bobcat Model B-120A and B-200A

DIAGNOSTIC ERROR CODES

WARNING:

If an operational problem has occurred, the boiler will shut off and show an “A”, “E” or “H” in the mode display, along with an error code in the temperature display.

Do not attempt performing any service under these conditions, but do note the mode and temperature dis- play indication, in case the problem clears itself. An “A” indication error can be cleared by pressing the reset button once, which will allow re-try of operation. Do not repeatedly press the reset button in this case, or if an “E” or “H” indication error is displayed. Call a trained, experienced service technician to troubleshoot and cor- rect the problem. The Bobcat Installation and Operating Instructions, publication B-40 contain a full troubleshoot- ing section for this. Turn off all electric power ot the boil- er before service.

A.LOCKOUT ERRORS:

Indicated by an “A” in the mode display. The reset button must be pressed to clear the error and retry operation. The temperature display shows the error code.

ERROR	INDICATION
CODE
01	Ignition Failure - 3 unsuccessful ignition
	attempts in a row
02	Flame Failure - 3 losses of flame signal
	during one demand
03	Water High Limit Open
04, 05, 09,
10, 12, 13,	Control Failure
14, 15, 16,
18, 32
19, 20	Flame Detected at Wrong Time
33	Fan Failure - RPM Error

ERROR	INDICATION
CODE
01	Water Outlet Sensor Open
02	Water Inlet Sensor Open
03	Flue Gas Sensor Open
11	Water Outlet Sensor Shorted
12	Water Inlet Sensor Shorted
13	Flue Gas Sensor Shorted
19, 42,
45, 46,	Control Failure
47, 48
20	Flame Detected at Wrong Time
21	Polarity Error
22	Frequency Error
24	Earth Connection Faulty
30	Excess Flue Temperature
31	Low Water Cutoff Error
32	Excess Water Inlet Temperature
51	Reset Button Error
52	Boiler Model Selection Error

C.WARNING ERRORS:

Indicated by an “H” in the mode display. Operation of the space heating mode is not affected, and the warning is displayed intermittently. Operation of the DHW mode is automatically restored, once the condition is fixed. The temperature display shows the error code. Pressing the “Reset” button is

not required.

B.BLOCKING ERRORS:

Indicated by an “E” in the mode display. Operation is automatically restored, once the condition returns to normal or is fixed. The temperature display shows the error code. Pressing the “Reset” button is not required.

ERROR	INDICATION
CODE

04Domestic Hot Water Tank Sensor Open

14Domestic Hot Water Tank Sensor Shorted