70
XIV. Troubleshooting
A. Troubleshooting problems where no error code is displayed:
CONDITION
POSSIBLE CAUSES
Display Blank, Fan off, LWCO lights off
• No 120VAC Power at boiler. Check breaker and wiring
between breaker panel and boiler.
Display Panel Blank, Fan running
• Loose 120VAC connection wiring between boiler J-Box and
MCBA.
• Blown “F1” fuse in MCBA (see Figure 13.2 for location).
Replace with 5A fuse provided.
Display reads “U.125” continuously, Fan running
• Defective AT250 transformer.
• Blown “F3” fuse in MCBA (see Figure 13.2 for location).
Replace with 4A slow-blow fuse provided.
Boiler not responding to call for heat, Status code on display
=”0” (see Figure 11.1)
• Boiler is not seeing call for heat. Check thermostat or
zone wiring for loose connection, miswiring, or defective
thermostat/zone control.
Boiler fires, but display panel is blank
• Loose ribbon cable.
• Defective display.
WARNING
TURN OFF POWER TO BOILER BEFORE REPLACING FUSES OR WORKING ON WIRING.
Table 14.1: No Error Code Displayed
Figure 14.2: MBCA Fuse Location
Содержание BIMINI BUDDY BWC090
Страница 2: ......
Страница 9: ...7 Figure 5 1 Wall Mounting Hole Locations ...
Страница 10: ...Figure 5 2 Boiler Mounting Hardware 8 ...
Страница 25: ...FIGURE 7 21 DIMENSION L 23 FIGURE 7 20 INSTALLATION OF REDUCING ELBOW ON CONCENTRIC BOILER COLLAR ...
Страница 35: ...FIGURE 7 35b CUTTING VERTICAL TERMINAL FIGURE 7 35c COMPLETING VERTICAL TERMINAL INSTALLATION 33 ...
Страница 43: ...FIGURE 7 51 CONDENSATE PIPING ARRANGEMENT 41 ...
Страница 56: ...54 Figure 10 1 Wiring Connections Diagram ...
Страница 57: ...55 Figure 10 2 Ladder Diagram ...
Страница 58: ...56 Figure 10 3 Wiring of Isolation Relay for Control of Two Heating Circulators ...
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