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4–27
T-354
Table 4–7 Controller Pre-Trip Test Codes
CODE
TITLE
DESCRIPTION
NOTE
"Auto" or “Auto1” menu includes: P, P1, P2, P3, P4, P5, P6 & rSLts. “Auto2” menu includes P, P1, P2, P3,
P4, P5, P6, P7, P8, P9, P10 & rSLts.”Auto3 menu includes P, P1, P2, P3, P4, P5, P6, P7, P8 & rSLts
P
Pre-Trip Initiated
All lights and display segments will be energized for five seconds at the start of
the pre-trip. Since the unit cannot recognize lights and display failures, there are
no test codes or results associated with this phase of pre-trip.
P1-0
Heaters Turned On
S
etup:
Heater must start in the OFF condition, and then be turned on. A current
draw test is done after 15 seconds.
Pass/Fail Criteria:
Passes if current draw change is within the range specified.
P1-1
Heaters Turned Off
Setup:
Heater must start in the ON condition, and then be turned off. A current
draw test is done after 10 seconds.
Pass/Fail Criteria:
Passes if current draw change is within the range specified.
P2-0
Condenser Fan On
Requirements:
Water pressure switch (WP) input must be closed.
Setup:
Condenser fan is turned ON, a current draw test is done after
15 seconds.
Pass/Fail Criteria:
Passes if current draw change is within the range specified.
P2-1
Condenser Fan Off
Setup:
Condenser fan is turned OFF, a current draw test is done after
10 seconds.
Pass/Fail Criteria:
Passes if current draw change is within the range specified.
P3
Low Speed
Evaporator Fans
Requirements:
The unit must be equipped with a low speed evaporator fan, as
determined by the Evaporator Fan speed select configuration variable.
NOTE
If the unit is configured for single evaporator fan operation, Pre-Trip tests P3-0,
P3-1, P4-0 and P4-1 will fail immediately if Controller alarm codes AL11 or
AL12 are active at the start of testing.
P3-0
Low Speed
Evaporator Fan
Motors On
Setup:
The high speed evaporator fans will be turned on for 10 seconds, then
off for two seconds, then the low speed evaporator fans are turned on. A current
draw test is done after 60 seconds.
Pass/Fail Criteria:
Passes if change in current draw is within the range speci-
fied. Fails if AL11 or AL12 activates during test.
P3-1
Low Speed
Evaporator Fan
Motors Off
Setup:
The low speed Evaporator Fan is turned off, a current draw test is done
after 10 seconds.
Pass/Fail Criteria:
Passes if change in current draw is within the range speci-
fied. Fails if AL11 or AL12 activates during test.
P4-0
High Speed
Evaporator Fan
Motors On
Setup:
The high speed Evaporator Fan is turned on, a current draw test is done
after 60 seconds.
Pass/Fail Criteria:
Passes if change in current draw is within the range speci-
fied. Fails if AL11 or AL12 activates during test.
P4-1
High Speed
Evaporator Fan
Motors Off
Setup:
The high speed Evaporator Fan is turned off, a current draw test is done
after 10 seconds.
Pass/Fail Criteria:
Passes if change in current draw is within the range speci-
fied. Fails if AL11 or AL12 activates during test.
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