R-Pro › Field cases › Ice machines
Repeated Error Code Display
Likely causes
Hoshizaki E1 — freeze time exceeded (cooling failure)
Check: Simultaneously check condenser contamination and refrigerant pressure — E1 is typically caused by condenser fouling (high-head) or refrigerant shortage
What to do: Clean condenser fins; if refrigerant low, repair leak then recharge; reset error after root cause fix
Hoshizaki E2 — harvest time exceeded (ice release failure)
Check: Check evaporator temperature during harvest — must reach +8°C; if not, hot gas valve failure
What to do: Measure hot gas solenoid coil resistance (normal 10~30Ω) then replace; check hot gas piping for blockage
Manitowoc 2A — extended harvest cycle
Check: Measure harvest cycle duration — 2A triggered when exceeds 2~4 min normal; check cooling water temperature and condenser condition
What to do: Clean condenser; for water-cooled, check cooling water flow rate; inspect hot gas valve
Manitowoc 2L — extended freeze cycle
Check: Measure freeze cycle — 2L triggered above 12~18 min normal; check low pressure — R-404A -15°C saturation 0.37 MPa; below = refrigerant low
What to do: Clean condenser then recheck high pressure; repair refrigerant leak and recharge if low
Ice-O-Matic E3/E5 — high-pressure trip / freeze delay
Check: E3=high-pressure switch trip; E5=freeze time exceeded; check discharge pressure with high-pressure gauge — R-404A @40°C normal 1.6 MPa, above 2.2 MPa = E3
What to do: Clean condenser fins + verify fan operation; reset E3 and restart; full refrigeration system inspection if recurring
Error codes differ by manufacturer — Hoshizaki E1/E2, Manitowoc 2A/2L, Ice-O-Matic E3/E5 code charts must be kept at the site
All 565 cases work offline in R-Pro, with error codes for 62 brands and P-T data for 108 refrigerants.
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