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Pay particular attention to high- and low-voltage wiring of sequencers. 2. Check plug wiring to mdee sure that it is wired correctly, 3. Check voltage to sequencer. Sequencer number 1 receives a 24-vac signal. If it is receiving correct voltage, check to see if sequencer is closing. If sequencer is not closing but is -10- '14/2008/THU 03:47 UTC TECH PUB FAX No. 317 240 5662 P. 01 TABLE 3—MALE/FEMALE QUICK-CONNECT TERMINALS SIZE FEMALE SIZE MALE DESCRIPTION 0.250 X 0.032 М2 Motor line voltage connection (230 vac 60 Hz) T3 Transformer line voltage connection (230 vac 60 Hz) T2 Transformer tap storage terminal for 208-vac lead SEC1 Secondary connection from transformer (24 vac) This connection is common to chassis ground through eyelet marked GROUND SCREW REQUIRED. SEC2 Secondary connection from transformer (24 vac) HUM1 Low voltage ground for humidifier option (24 vdc) HUM2 Low voltage output for humidifier option (24 vdc) AUX1 Low voltage ground for auxiliary option (24 vdc) AUX2 Low voltage output for auxiliary option (24 vdc) 0.187 X 0.032 M1 Common connection to blower motor T1 Common connection for transformer REt) Common to R screw terminal and SEC2 TABLE A—CONNECTIONS ON SINGLE BARR1ËR STRIP MOUNTED, CROSS SLOTTED, CAPTIVE BINDING HEAD SCREW TERMINAL DESCRIPTION W2 Connection for W2 signal from thermostat W3 Connection fer W3 signal from outdoor thermostat E Connection for E signal from thermostat Y/Y2 Connection for Y signal from thermostat G Connection for G signal from thermostat 0 Connection for O signal from thermostat L This connection le e field termination for use in connecting L lines of thermostat and outdoor unit together. There is no connection of this terminal with contrai çlrçulty. Y1 Connection for low-speed compressor operation R Connection for R signal to thermostat (24 vac) С Connection for C terminal to thermostat (24 vac common) TABLE 5—CONNECTIONS AND CONNECTOR TYPE CONNECTION TYPE CONNECTOR PIN NO. DESCRIPTION Pin 1 Common to E screw terminal Pin 2 Common to W2 screw terminal Pin 3 Common to C screw terminal, SEC1 terminal, and chassis ground Pin 4 Common to C screw terminal, SECi terminal, and chassis ground Pins No connection Heater 12-Pln Pin 6 Common to W3 screw terminal Connection Pin 7 Common to M2 and Î3 quick-connects, 230 vac input Plh-B No connection Pin 9 Common to M1 and T1 quick-connects, 230 vac input Pin 10 No connection Pin 11 No connection Pin 12 No connection Pin 1 Diode OR output of E or W3 or W2 thermostat signals Pin 2 Thermostat G signal Pin 3 Common to C, SEG1, and chassis ground ICM2 Motor 7-Pin Header Pin 4 Common to C, SEC1, and chassis ground Pin 5 Common to R and SEC2 [via 5-amp fuse) Pin 6 Thermostat Y/Y2 signal Pin 7 Thermostat Y1 signal receiving correct voltage, replace sequencer. If sequencer is dosing, check high-voltage wiring as discussed in items 1 and 2. IF THERE ARE BLOWN DIODES: If diodes are blown., it is probable electric heater plug is mis wired. Correct miswiring. NOTE; Board will need to be replaced if diode is bad. IF TRACES ARE OVERHEATED ON BACK OF PCB: Usually whenever there is a trace blown on PCB, it means either there has been a high-voltage short or high voltage has been applied to low-voltage circuit. This can be prevented by making sure PCB is wired correctly before PCB has power applied to it. -11- THIS COMPARTMENT must be closed except for servicing CAUTION: MOT SÜlTABLË FOR use ON SYSTEMS EXCEED1NQ 150.VTQ (3ROUND ATTENTION: NE CONVIENT F3 AS AUX INSTALLATIONS DE PLUS DE 150 VA LA TERRE fcpKW 1PH SCHEMATIC DIAGRAM) (¿¿HEMATIC OIAflftAM ~) FI ELU POWER WIRING DISCONNECT PER NEC ite. rtAïina !>late ■ FOR VOLTS 4 HERTZ ! _ (SEE NOTE 1)_ \ rÙ BLJ< GB/F1J4 \ SEQ2 /CB/fUa *=*--_ CBIFUZ\ BE01 \ BU) i ÛISÛÛHNECT FER NEC BEE RATING FUME rgH VÜLT3 4 HERTZ (555 MOT*’} t-T f COOLINeiiùfJTBQL WIRINQ COOLIWB CONTROL ONLY » r c e> T in >< is. *0 X Wj X 1 1 1 1 I 1 1 1 | i £ 8 R 1 1 I I 1 J I ! 1 1 1 1 1 1 HPTB NOTES: 1* Use copper wire only between dfoconnect switch and unit. 2. Connect (Y) to (Y), (C) to (C), etc. In pattern shown. S. Transformer primary leads: BLUE 20flV, RED 230V, 4, To be wired in accordances with NEC and local ciidefi. 5, If any of the original wire, as supplied, must b? replaced, use the name or 6, Replace low voltage fuse with no greater than 5 amp fuse, 7, Fuse is wired In series between transformer SEC2 and low VOllage 'FT circuit. 8, KOKW heator uses one double polo LS on middle top element 0.18,24 and 30KW heaters use double pole limit switches. 10. Largest Heaters are shown, smaller heaters will have fewer elements and □□m portents. 11,1 phase healer; are shown wired for single supply circuit. Multiple supply circuits may be wired directly to fuse/C.B.'S. equivalent type wire. o MARKED TERMINAL LS LIMIT SWITCH ? UNMARKED TERMINAL ICM FAN MOTOR FIEL...

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