Detroit Radiant Products Company MP Series - Manual (Page 21)

21
MP Series
Chart 3.2 • Diagnostic LEDs
LED Color Description Operation
2 Green Power On if power to unit .
3 Green Heat On if call for heat .
4 Green Fan On if fan energized .
5 Green Valve On if valve energized .
6 Red Service Errors (see Chart 3 .3) .
LED CODE
(Number of Flashes)
STATUS / ERROR
1-1 Long Run Time - Actual temperature fails to rise after 4 hours of consecutive running .
1-2 Blower - Fan is on but static pressure is not reading properly .
1-3 Ignition Module Failure - Ignition module failed to initiate sequence of ignition .
1-4 Ignition Soft Lockout - Control will auto reset after 15 minutes . See lockout in diagnostics
section .
2-1 Ignition Hard Lockout - Ignition module will NOT auto reset; unit will not operate unless
there is an interruption by the user .
2-2 Sensor Error - External temperature sensor is shorted or reading open .
2-3 Internal Software Error - Failure with software on modulating controller .
2-4 Model Selection or Setup Error - Invalid model selection DIP Switch configuration
3-2 Error with User Interface - Short was detected in user interface .
Chart 3.3 • Flash Code Status LED (located on Circuit Board)
Each of the following status codes is a two digit number with the first digit determined by the number of
short flashes and the second digit by the number of long flashes .
Figure 3.2 • Circuit Board LEDs
LED2
LED3
LED4
LED5
LED6
LED1
LED2
LED3
LED4
LED5
LED6
LED1
LED2
LED3
LED4
LED5
LED6
LED1
Chart 3.1 • Operation LED
LED Color Description Operation
1 Green Relay ON On if relay ON to ignition module .
LED Short Flash: 0 .5 Seconds ON, 0 .5 Seconds OFF .
LED Long Flash: 1 .5 Seconds ON, 1 .5 Seconds OFF .
3.0 Operation • Diagnostics