14
P/N 1010751 Rev. G 01/08
McDonald’s
Multi-purpose steaMer - Mps-250
diaGNostiCs
UP
DOWN
PROGRAM SINGLE SHOT
1
2
3
4
PWR
PWr
(Power) will be displayed when the supply volt-
age is lower than 160 Volts AC or above 265 Volts AC.
UP
DOWN
PROGRAM SINGLE SHOT
1
2
3
4
OPEN
oPeN
will be displayed when the thermocouple is
damaged or not installed correctly.
UP
DOWN
PROGRAM SINGLE SHOT
1
2
3
4
TEMP
teMP
indicates the control cabinet temperature has
exceeded 155°F (68°C) causing the unit to shut down.
If this indication occurs turn the unit off and allow the
unit to cooling for 20 minutes.
diagnostics
The four-channel controller is also equipped with diag-
nostic features. Listed under each drawing is a brief
description of the particular feature, Also contained in
the control housing mounted on the control board are
diagnostic LED’s. They are in three colors and repre-
sent the following:
*
Green (Program):
When lit, indicates default
settings are being set.
* Yellow (audio):
When lit, indicates power is
being sent to the audio device.
* red (heat):
When lit, indicates the unit is
calling for heat.
* Green (Water):
When lit, indicates that power
is being sent to the water pump or solenoid.
UP
DOWN
PROGRAM SINGLE SHOT
1
2
3
4
HIGH
hiGh
will be displayed when the Generator tempera-
ture exceeds the setpoint temperature by 50°F (10°C).
UP
DOWN
PROGRAM SINGLE SHOT
1
2
3
4
LOW
loW
will be displayed until the Generator temperature
exceeds 250°F (121°C).
Note: For Manufacturing # 9100336 and 9100346,
the low limit temperature is 365˚ F (185˚ C).
