McQuay MicroTech Unit Controller - Page 39

Table 23. Trouble SvmDtom Ch
OUT
OUT
OUT
OUT
BLINKING
BLINKING
BLINKING
BLINKING
BLINKING
BLINKING
OUT
BLINKING
BLINKING
ON CONSTANT
BUT DIM
BLINKING
BLINKING
BLINKING
BLINKING
BLINKING
BLINKING
BLINKING
OUT
BLINKING
BLINKING
BLINKING
BLINKING
BLINKING
BLINKING
BLINKING
BLINKING
BLANK
NORMAL
NONSENSE
TRIP
STATEMENT
NONSENSE
“MCR OFF”
WAITING LOW
AMPS
“HIGH MOTOR
AMPS”
“OIL GAUGE
SENSOR”
“WAITING FOR
LOAD”
OUT
OUT
ON
OUT
ON
ON
ON
ON
ON
UNIT OFF
LOGIC CARTRIDGE
(2)
MOTHERBOARD (1 & 2)
DAUGHTER BOARD
FUSE BLOWN
(4)
TRANS 3 FUSIBLE
LINK BLOWN
(5)
SOME ON TRANS 2 FUSIBLE
SOME OFF LINK BLOWN
(3)
DISPLAY ENGINN BAD
(9)
ON MICROPROCESSOR
LED BAD
(5)
SOME ON LOGIC CARTRIDGE
(2)
UNIT OFF
TRIP STMT
DAUGHTER BOARD
DISAGREES DEFECTIVE
(3)
W/LED IND.
LED IS DIM 1
ON 1 HEX SWITCH SETTING
(7)
UNIT RUNS
ON
UNIT OFF
SOME ON
SOME OFF
OIL PUMP
RUNNING
UNIT OFF
SOME ON
TS4, TERMINALS 7 & 8
OPEN CIRCUIT AT TS4
Jl
SOME OFF OGT ABNORMAL
(‘3)
UNIT OFF OIL PRESS. TOO HIGH
(13)
OGT DEFECTIVE
(13)
SENSOR TO DAUGHTER BOARD
* Output relay LED’s light when the relay coil circuit is instructed to energize, if there is a source of 0 and +5 VDC at the - and + terminals at the bottom
of the terminal strip.
** The Control EnGinn consists of a Logic Cartridge, a Power Cartridge and a mother board.
Table 24. Control Fuses.
IM 403 I Page 39