Carrier 39L - Manual (Page 107)

Table 20 — Test of Output Options Using Option Module
KEYBOARD
ENTRY
DISPLAY
RESPONSE
COMMENTS/ACTION
RFVC X
RFVCTEST Verify that the return fan IGVs stroke to their fully open position.
HUM1 % The return fan IGVs should close.
HUM1TEST Verify that the return fan IGVs, if so equipped, return to their fully closed position. If equipped with single- stage
analog humidification control, verify that the modulating valve goes to its fully open position. If equipped with
two stages of humidification, use an ohmmeter to verify that the reading across the 1st stage normally-open
relay contacts is less than 10 ohms.
HUM2 % Verify that the reading across the 1st stage normally-open relay contacts is greater than 1000 ohms.
HUM2TEST
If equipped with two stages of humidification, use an ohmmeter to verify that the reading across the 2nd stage
normally open relay contacts is less than 10 ohms.
AOTC %
If equipped with two stages of humidification, verify that the reading across the 2nd stage humidification nor-
mally open relay contacts is greater than 100 ohms.
AOTCTEST Verify that the analog device connected to this output strokes to its 100% position.
DOTC X Verify that the analog device connected to this output strokes to its 0% position.
DOTCTEST
Using an ohmmeter, verify that the reading across the DOTC (Discrete Output Temperature Control) normally
open relay contacts is less than 10 ohms.
DTCC X
Using an ohmmeter, verify that the reading across the DOTC normally open relay contacts is greater than 1000
ohms.
DTCCTEST Using an ohmmeter, verify that the reading across the DTCC (Discrete Timeclock Control) normally open relay
contacts is less than 10 ohms. Proceed with the testing of electric heat stages (Table 21). If the unit is not
equipped with electric heat, exit the Quick Test mode as described below:
EXIT TST
TST CMPL Test is now completed. The unit is back under normal automatic control.
Table 21 — Electric Heater Test
KEYBOARD
ENTRY
DISPLAY
RESPONSE
COMMENTS/ACTION
NOTE: Only the configured number of stages are tested and appear on the display.
ELE HEAT Entering field test of electric heater. (Set the HOA switch to AUTO.)
EHS1 X
STG1 TST
The fan starts. If equipped, the IGVs open to 30%. After an 11-second delay, the 1st stage of heat is
turned ON.
EHS2 X The 1st stage of heat is turned OFF.
STG2 TST After a 2-second delay, the 2nd stage of heat is turned ON.
EHS3 X The 2nd-stage of heat is turned OFF.
STG3 TST After a 2-second delay, the 3rd stage of heat is turned ON.
EHS4 X The 3rd stage of heat is turned OFF.
STG4 TST After a 2-second delay, the 4th stage of heat is turned ON.
EHS5 X The 4th stage of heat is turned OFF.
STG5 TST After a 2-second delay, the 5th stage of heat is turned ON.
EHS6 X The 5th stage of heat is turned OFF.
STG6 TST After a 2-second delay, the 6th stage of heat is turned ON.
EHS7 X The 6th stage of heat is turned OFF.
STG7 TST After a 2-second delay, the 7th stage of heat is turned ON.
EHS8 X The 7th stage of heat is turned OFF.
STG8 TST After a 2-second delay, the 8th stage of heat is turned ON.
EXIT TST The fan and preceding stage of heat shut OFF.
TST CMPL Test is complete. The unit is back under automatic control.
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