Hoshizaki 73183 Refrigerator User Manual


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c) HPS Activation: Conrm ConFM is energized and fan blade turns freely. Check that the
condenser coil is not clogged or restricted. Check that there are no restrictions in the
refrigeration circuit (drier, TXV).
Conrm that the location meets factory requirements:
•Thisunitisnotintendedforoutdooruse.Normaloperatingambienttemperatureshould
be within 45°F to 100°F (7°C to 38°C).
•Theunitshouldnotbelocatednexttoovens,grills,orotherhighheatproducing
equipment.
•Theunitshouldnotbelocatedinacorrosiveenvironment.
•Theunitshouldbeaminimumof4"(11cm)fromsidewalls.
•Aminimumof10"(25cm)overheadclearanceshouldbeprovidedforproperventilation.
8) Cool Down Achieved–CTh cools to 3°F (1.7°C) below setpoint. EvapFM, MH, and
PH continue. Comp and ConFM de-energize. Diagnosis: If Comp and ConFM do not
de-energize,conrmCThstatus.See"IV.C.ThermistorCheck."IfCThohmreadingisin
proper range and Comp and ConFM do not de-energize, CM is defective and must be
replaced.
9) Defrost
Temperature/Time-Initiated Defrost: Once DTh cools to 32°F (0°C), a 4-hour cumulative
Comp run timer starts. Once DTh is at or below 32°F (0°C) and 4-hour cumulative
Comp run timer terminates, MH and PH continue, DH energizes, and Comp, ConFM,
and EvapFM de-energize. Defrost Termination: DTh warms to 59°F (15°C). MH and
PH continue. DH de-energizes. 3-minute Comp delay timer starts, 8-minute EvapFM
delay timer starts (3-minutes on manually initiated defrost), and 13-minute temperature
display delay timer starts.
3-minute Comp delay timer terminates, Comp and ConFM energize. 5 minutes later,
8-minute EvapFM delay timer terminates and EvapFM energizes. 5 minutes after that,
13-minute temperature display delay timer terminates and cabinet temperature appears
on DM.
Defrost Diagnosis:
Defrost Initiation: Has DTh cooled to 32°F (0°C) or lower? Conrm DTh status. See
"IV.C.ThermistorCheck."Has 4-hour Comp cumulative run timer satised. Check that
Comp, ConFM, and EvapFM de-energize. If not, check for 115VAC between CMC1
and CMN5, then between CM F6 and CM N5. If 115VAC is present, CM is defective
and must be replaced. If there is no voltage between CM C1 and CM N5 and Comp
and ConFM do not de-energize, check for 115VAC between CR terminal 1 and neutral.
If 115VAC is present between CR terminal 1 and neutral, CR is defective and must be
replaced. Conrm DH energizes. If not, check for 115VAC between CM H4 and CMN5.
If 115VAC is not present and DTh is in proper range, CM is defective and must be
replaced. If 115VAC is present, conrm DH thermostat continuity, DH amp draw, and
DH continuity.
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