YP7999A1000 CONTROLINKS™ FUEL AIR RATIO CONTROL PANEL
366-2060—01
TROUBLESHOOTING

System Diagnostics

The S7999D touchscreen interface indicates the current fault and keeps a fault history log. The R7999 ControLinks control and
the ML7999A Universal Parallel-Positioning Actuator also have LED fault blink codes. Refer to the appropriate product instruction
sheet for further troubleshooting information and diagnostic codes.
FIELD WIRING
Table 1. Field Wiring and Terminal Designation1.
Terminal #
To Connecting
Device Description
12L1 Panel power 120Vac Power Supply, 3A Max.
L1 power to circuit breaker.
Provide disconnect means and overload protection as required.
2 L2 Panel neutral
GND Panel ground
43L1 L1 customer convenience wire point – provided for 4 actuators – 120Vac, 50/60Hz
23L2 L2 customer convenience wire point – provided for 4 actuators
GND3Panel ground GND customer convenience wire point – provided for 4 actuators
9 HFP High Fire Proven output from ControLinks controller to burner control
10 LFP Low Fire Proven output from ControLinks controller to burner control
11 HF High Fire drive command input from burner controller
12 MV Main Valve command input from burner controller
13 LF Low Fire drive command input from burner controller
14 LCI Limit Control Input from burner limit string, including on/off control, LWCO, high-limit, etc…
15 LCO Limit Control Output from ControLinks controller to burner control demand/interlock inputs
2003,4 DR1 Air Actuator DR1 command input
2013,4 DR2 Air Actuator DR2 command input
2023,4 CW Air Actuator potentiometer CW output
2033,4 S Air Actuator potentiometer S output
2043,4 CCW Air Actuator potentiometer CCW output
GND3,4 Ground Air Actuator ground
2053,4 DR1 Fuel 1 Actuator DR1 command input
2063,4 DR2 Fuel 1 Actuator DR2 command input
2073,4 CW Fuel 1 Actuator potentiometer CW output
2083,4 S Fuel 1 Actuator potentiometer S output
2093,4 CCW Fuel 1 Actuator potentiometer CCW output
GND3,4 Ground Fuel 1 Actuator ground
2103,4 DR1 Fuel 2 Actuator DR1 command input
2113,4 DR2 Fuel 2 Actuator DR2 command input
2123,4 CW Fuel 2 Actuator potentiometer CW output
2133,4 S Fuel 2 Actuator potentiometer S output
2143,4 CCW Fuel 2 Actuator potentiometer CCW output
GND3,4 Ground Fuel 2 Actuator ground