Hoshizaki HR24B, Руководство по обслуживанию

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9) Cool Down Achieved – EvapFM icon is on. CTh cools to setpoint (default 39°F).
EvapFM continues. If Comp run time > 3-min., Comp icon turns off and Comp
de-energizes. If Comp run time < 3-min., Comp continues until 3-min. Comp run timer
terminates, then Comp icon turns off and Comp de-energizes.
Diagnosis:
If CTh is
in range and Comp does not de-energize, confirm Comp run time > 3 min. If Comp
continues after 3-min. Comp run timer terminates, replace CB.
10) Cool Down Restart – EvapFM icon is on. CTh warms to 4°F above setpoint (default
39°F). Comp icon turns on and Comp energizes. 3-min. Comp run timer starts.
Diagnosis:
See step 8 above.
11)
Defrost–EvapFM and Defrost icons are on. Cabinet Temperature is Displayed.
a) Automatic Defrost Initiation: 6-hr. DT terminates. 30-min. DT starts. EvapFM
continues. If Comp run time < 3 min., Comp icon and Comp continue until 3-min.
Comp run timer terminates. Once 3-min. Comp run timer terminates, Comp
icon turns off, Comp de-energizes, and defrost starts.
Diagnosis:
Has 6-hr. DT
terminated? If defrost icon is on, confirm that Comp de-energizes. If not, confirm
Comp run time > 3 min. If Comp continues after 3-min. Comp run timer terminates,
replace CB.
b) Manual Defrost Initiation: To initiate a manual defrost, press and hold the "+" button
until the defrost icon turns. 30-min. DT starts. EvapFM continues. If Comp run time
< 3 min., Comp icon and Comp continue until 3-min. Comp run timer terminates.
Once 3-min. Comp run timer terminates, Comp icon turns off, Comp de-energizes,
and defrost starts.
Diagnosis: If defrost icon is on, confirm that Comp de-energizes.
If not, confirm Comp run time > 3 min. If Comp continues after 3-min. Comp run timer
terminates, replace CB.
c) Defrost Termination: Comp icon is on. EvapFM icon flashing. 30-min. DT
terminates. 6-hr. DT starts. Comp icon turns on and Comp energizes. 2-min. EvapFM
timer starts. EvapFM icon starts flashing and EvapFM de-energizes. When 2-min.
EvapFM timer terminates, EvapFM icon turns steady and EvapFM energizes. Normal
operation resumes.
Diagnosis:
Has appliance been in defrost for 30 min.? If not,
allow 30-min. DT to terminate. Confirm CTh is 4°F above setpoint. After 30-min.
DT terminates, does Comp icon turn on and Comp energize? If not, replace CB. If
30-min. DT terminates and Comp icon turns on but Comp does not energize, check
CB Comp connector for 115VAC. If 115VAC is not present, replace CB. If 115VAC is
present, and Comp is off, check Comp wire harness connections, Comp external
protector (integrated with start relay), Comp start components, and Comp motor
winding continuity.