Manitowoc EC18 - Page 8

Troubleshooting
All Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Ice Machine Will Not Run . . . . . . . . . . . . . . . . . .31
Compressor Won’t Run. . . . . . . . . . . . . . . . . . . . 32
Compressor Electrical Diagnostics . . . . . . . . . . . 33
Diagnosing Start Components. . . . . . . . . . . . . . . 35
No Timer Models . . . . . . . . . . . . . . . . . . . . . . . . . .36
Water Pump Won’t Run. . . . . . . . . . . . . . . . . . . . 36
Hot Gas Valve Won’t Energize . . . . . . . . . . . . . . 37
Water Inlet Valve Won’t Energize . . . . . . . . . . . . 38
Ice Machine Prematurely Harvests . . . . . . . . . . . 39
Ice Machine Will Not Harvest . . . . . . . . . . . . . . . 40
Mechanical Timer Models . . . . . . . . . . . . . . . . . . . 41
Hot Gas Valve Won’t Energize . . . . . . . . . . . . . . 42
Water Inlet Valve Won’t Energize . . . . . . . . . . . . 43
Ice Machine Prematurely Harvests . . . . . . . . . . . 44
Ice Machine Will Not Harvest . . . . . . . . . . . . . . . 45
SCR Timer Models . . . . . . . . . . . . . . . . . . . . . . . . . 46
Water Pump Won’t Run. . . . . . . . . . . . . . . . . . . . 46
Hot Gas Valve Won’t Energize . . . . . . . . . . . . . . 47
Water Inlet Valve Won’t Energize . . . . . . . . . . . . 48
Ice Machine Prematurely Harvests . . . . . . . . . . . 49
Ice Machine Will Not Harvest . . . . . . . . . . . . . . . 50
Water System Checklist. . . . . . . . . . . . . . . . . . . . . 51
Ice Production Check. . . . . . . . . . . . . . . . . . . . . . . 52
Analyzing Discharge Pressure . . . . . . . . . . . . . . . 53
Discharge Pressure High Checklist. . . . . . . . . . . 54
Freeze Cycle Discharge Pressure Low Checklist 55
Analyzing Suction Pressure . . . . . . . . . . . . . . . . .56
Suction Pressure High Checklist. . . . . . . . . . . . . 58
Suction Pressure Low Checklist . . . . . . . . . . . . . 59
Discharge Line Temperature Analysis. . . . . . . . . 60