Carrier 17/19EX Perform an Automated Control Test

that the value appeari ng on the LID is calibrated to the incoming power vol tage reading. Volt age
can be calibrated only to between 90 and 100 percen t of r at ed line voltage.
Perform an Automated Control Test
Check the safety controls status by performing an auto mated controls test. Access the
Control Test table and se lec t the Automated Tests fu nc t ion (Table 7).
The Automated Control Test will check all output s and inputs for function. I t wi ll also set the
refrigerant type. The com pr e ssor must be in the OFF mode in order to ope rate the controls test
and the 24-v input to the SMM must be in range (per line voltage percent on Status01 table).
The OFF mode is caused by pre ssing the STOP pushbut to n on the LID. Each test will ask the
operator to confirm th at the operation is occurr ing , and whether or not to cont inue. If an error
occurs, the operato r has the choice to t ry to address the pr oblem as the test is bei ng done, or to
note the problem and pro c eed to the next test.
Note: If during the Control Tes t the guide vanes do not open, ch ec k to see that the low pres-
sure alarm is not active. (This will cause the guid e vanes to close.)
Note: The oil pump test will not ener g ize the oil pump if cooler pr e ssure is below –5 psig
(–35 kPa).