MP-3000 Controller
88
Manual Function Test
The Manual Function Test menu allows
technicians to perform specific diagnostic tests on
individual components or turn several
components on at the same time to perform a
system test.
NOTE: When the Manual Function Test menu
is entered, the UNIT STOPS. A technician can
then select the control circuit or component to be
checked/tested from the items shown in the
menu.
With the U
NIT ON/OFF switch ON and the LCD
display showing the standard display (setpoint):
1. Press F3 key to enter the menu list.
Repeatedly press F2 key to scroll through
Main menu until “COMMANDS” appears in
LCD display.
2. Press F4 key to access the Commands menu.
The first command in the submenu appears in
the LCD display.
3. Press F2 or F3 key to scroll to “MANUAL
FUNCTION TEST”.
4. Press F4 key to enter the Manual Function
Test: “CONDENSER OFF” appears in the
LCD display.
5. To test a unit component:
a. Press F2 or F3 key to scroll to desired
component test:
•“CONDENSER”
•“SENSOR CHECK LOW”
•“SENSOR CHECK”
•“ZERO CURRENT”
•“HEAT”
•“AFAM CLOSE”
•“AFAM OPEN”
•“EVAP LOW.”
•“EVAP HIGH”
Return
Temp.
PTI Running
Setpoint: -18 C (0 F)
Unit operates in Normal mode with -18 C
(0 F) setpoint. When return air
temperature decreases to setpoint,
“Frozen Arrival” temperatures are
recorded in PTI log.
If unit is configured with humidity sensor,
relative humidity must be between 20%
and 95% or a Humidity Sensor alarm is
recorded and stored in the PTI log.
“PTI End” is recorded in the PTI log. A
Trip Start is automatically activated.
Current load port, discharge port,
comment, and USDA entries are cleared
from controller memory.
Alarms (if any) are cleared from
datalogger. However, alarms (if any)
remain in alarm list as not active until
acknowledged.
22, 60
180 Minutes
Maximum
Return
Temp.
PTI PASS:
Press (Any) Key
If alarms (errors) occurred during PTI test,
LCD display shows PTI FAIL. Press any
key to clear display.
Unit will remain off unit any key is pressed
again.
None —
CSR Pre-trip (PTI) Test Procedure (Continued)
LED
Display
(Test No.)
LCD Display
(Shows Approx. Amps for
460V, 60 Hz Unit)
Test Description
Possible
Alarms
Duration
(Time)
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