Troubleshooting Reference
Manual # 42-02-1P28 A3 5-59
CTLA MTM INPUT FAILURE (407) Description:
The input monitors the continuity of the M contactor coil and also checks
the OFF state of the (TM) triac.
Troubleshooting:
1. Verify that the M CONTACTOR INSTALLED parameter has been set to YES
(if present).
2. Check the contactor coil.
3. Check the termination of the left hand M contactor coil at terminal M1 on
the HC-DVR board.
4. Replace the HC-DVR board.
CTLA MTY INPUT FAILURE (408) Description: The input monitors the continuity of the Y Contactor coil and
also checks the OFF state of the (TY) solid state device.
Troubleshooting:
1. Verify that the STARTER parameter is set to the correct type, WYE
DELTA.
2. Check the termination of the left-hand Y contactor coil at terminal YD1
on the HC-DVR board.
3. Check the normally closed auxiliary contact of DEL that feeds the right-
hand coil of Y.
CTLA MUSE INPUT IS LOW (411) Description: The MUSE input monitors the continuity of the Up Slow Valve
coil and also checks the OFF state of the USE triac.
Troubleshooting:
1. Check the termination of the valve coil at terminal USE on the HC-DVR
board.
2. Check terminal US for 120VAC with respect to 1 bus.
3. Replace the HC-DVR board.
CTLA RFV FAIL TO ACTIV (414) Description: With the VALVE TYPE parameter set to PILOT RELAYS, the
Redundancy Fast Valves (RFV) input did not go high when controller deacti-
vated the associated pilot relays.
Troubleshooting:
1. Check the wiring to the RFV spare input.
2. Verify that the RFV input is programmed in the correct spare input loca-
tion.
3. Set the proper external memory address for the RFV spare input. Use a
120VAC jumper to toggle the RSV input and verify that the appropriate bit
toggles.
4. Verify that the appropriate fast pilot relay (up or down) picks at the
beginning of a high-speed run and drops at the slow down point for the
floor.
CTLA RFV FAIL TO DEACT (420) Description: With the VALVE TYPE parameter set to PILOT RELAYS, the
Redundancy Fast Valves (RFV) input did not go low when controller acti-
vated the associated pilot relays.
Troubleshooting:
1. Check the wiring to the RFV spare input.
2. Verify that the RFV input is programmed in the correct spare input loca-
tion.
3. Set the proper external memory address for the RFV spare input. Use a
120VAC jumper to toggle the RSV input and verify that the appropriate bit
toggles.
4. Verify that the appropriate fast pilot relay (up or down) picks at the
beginning of a high-speed run and drops at the slow down point for the
floor.
Table 5.10 Touch Screen Event Listings
Event Description
To Next Page
Loading...
