TROUBLESHOOTING
WARNING: Troubleshooting of components necessarily re- quires opening the electrical control box with the power connected to the unit. Use extreme care when working with live circuit! Check the unit nameplate for the correct range before making any connections with line terminals.
CAUTION: The wire number or color and terminal designa- tions referred to may vary. Check the wiring label inside the control box access panel for the correct wiring.
CAUTION: If the variable speed motor found in the BHH060 models operates erratically, check the fan control board for the presence of a
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| ELEMENTARY DIAGRAM |
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| POWER SUPPLY |
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| WITH ELEC HEAT |
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| T2 | L 2 |
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| GND |
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| POWER SUPPLY |
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| CONDUCTORS ONLY |
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| LUG | F1 |
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| 709 |
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| CONDUCTORS ONLY |
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| /BK |
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| 112 |
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| /PR |
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| /BR |
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| 101/BK |
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| L1 |
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| T1 |
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| 240V/BK |
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| 114/BK |
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| COMPR |
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| RC1 |
| 104 |
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| 105/R W/ALT |
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| CAPACITORS |
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| RC2 |
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| CCH | BLK | L1 | ||
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| OD FAN |
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| MOTOR |
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| 1 |
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| D / P CONFIGURATION | |||
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| 240V/PR | GRN |
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| CCH | BLK | L1 | ||
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| BLK |
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| L2 | |
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| 5 | 4 | 3 | 2 | 1 | P5 |
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| F3 | 703 |
| K3 | 704 |
| HTR 2 | 705 |
| F4 |
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| COM | NO |
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| BK | BL |
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| S5 |
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| K5 |
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| 711 |
| 712 |
| 713 |
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| I.D.FAN |
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| BK | BL |
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| MOTOR |
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| K4 |
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| F5 |
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| HTR 4 |
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| 230V |
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| 706 |
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| 708 |
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| COM | NO |
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| BK | RED |
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| HTR 5 |
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| 714 |
| 715 |
| 716 |
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| COM | NO |
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1 | 2 | 3 | 5 | 6 | 9 | 11 | 12 | 13 | 15 |
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P4 |
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| BK | RED |
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| EM/W |
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| 109/BK |
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| COM |
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| 208V |
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| C |
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| 292/R |
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| R/RED | NO |
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| HEAT/BLK |
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| COOL/BLU |
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| TABLES |
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| HTR 1 |
| 701/Y | P3 | S3 |
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| H4 | 4 |
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| 3 | L1 |
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| /R | /O |
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| O/ORN |
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| 813 |
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| 810/BL |
| K3 | 12D |
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| LTRIP |
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| 205/R |
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| ECM |
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| 226/O |
| /BL | /O |
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| 2 |
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| CONTROL |
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| SPEED |
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| SEE DETAIL B |
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| R Y | G | W2 W1 | O | C | TB1 |
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| ROOM THERMOSTAT | ||
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| BLU | COND FAN |
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| O |
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| R |
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| ON |
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| BLU | STAT | DEFROST |
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| C | CONTROL |
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| FAN |
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| G |
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| AUTO |
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201/BR |
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| M1 | 222/Y | M |
| X |
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| TH1/TC1 ANT COOL |
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| COMPR |
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| TC1 | OFF |
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| RELAY | R |
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| FS |
| 804 |
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| 805 |
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| TH1 |
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| HEAT |
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| BK |
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| BL |
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| H |
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| PRESS |
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| TH2 | EM HT |
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| SWITCH |
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| 803 |
| HP |
| 802 |
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| 218/Y |
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| EM HT (RED) |
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| Y |
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| BK |
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| BK |
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| DEF |
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| 219/BK |
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| 215/O |
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| SEE NOTE 6 |
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| O |
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| 220/O |
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| W |
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| 217/GY |
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| Y |
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| RVS |
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| DEF |
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| W |
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| RV |
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| 216/W |
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| 221/BR |
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| X |
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| TH2 ANT |
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| ||||
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| C |
| W1 |
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B
203/BR
FIG. 5 - TYPICAL WIRING DIAGRAM BHH060 MODELS-
18 | Unitary Products Group |
