Hoshizaki HR24A Manual Do Utilizador
26
IV. Service Diagnosis
WARNING
• This appliance should be diagnosed and repaired only by qualified service
personnel to reduce the risk of death, electric shock, serious injury, or fire.
• Risk of electric shock. Use extreme caution and exercise safe electrical practices.
• Moving parts (e.g. fan blade) can crush and cut. Keep hands clear.
• Make sure all food zones are clean after the appliance is serviced. For cleaning
• Moving parts (e.g. fan blade) can crush and cut. Keep hands clear.
• Make sure all food zones are clean after the appliance is serviced. For cleaning
procedures, see "VI. A. Cleaning."
A. Diagnostic Procedure
The diagnostic procedure is basically a sequence check that allows you to diagnose the
electrical system and components. Before proceeding, check for correct installation and
proper voltage per appliance nameplate. When checking AC voltage (115VAC), always
choose a neutral (W wire) to establish a good neutral connection. If the control board is
in alarm, see "II.F Alarm Safeties." For further details, see "IV.B. Control Board Check."
electrical system and components. Before proceeding, check for correct installation and
proper voltage per appliance nameplate. When checking AC voltage (115VAC), always
choose a neutral (W wire) to establish a good neutral connection. If the control board is
in alarm, see "II.F Alarm Safeties." For further details, see "IV.B. Control Board Check."
• If the control panel is locked, press and hold the "-" button and the power button until
"UnL" appears briefly on the display module.
• The °F and cabinet temperature LEDs remain on throughout the sequence of operation.
• This appliance uses a time-initiated/time-terminated Comp off cycle defrost. The factory
• This appliance uses a time-initiated/time-terminated Comp off cycle defrost. The factory
default defrost setting is once every 6 hours for 30 min.
• 6-hr. defrost timer starts the very first time CB is energized (during factory testing).
Defrost time is cumulative power on time, therefore time may vary between starting
the appliance and the first defrost. After the first defrost, defrost can be monitored for
activation every 6 hours.
the appliance and the first defrost. After the first defrost, defrost can be monitored for
activation every 6 hours.
• Cabinet temperature is displayed during defrost.
1) Press and hold the power button for 2 sec. to turn off the appliance.
2) Unplug the appliance from the electrical outlet.
3) Remove the top panel. Secure the top panel to prevent it from falling over when
2) Unplug the appliance from the electrical outlet.
3) Remove the top panel. Secure the top panel to prevent it from falling over when
checking voltages and CB items.
4) Secure (tape) DS in the door closed position.
5) Plug the appliance back into the electrical outlet. °F LED turns on.
5) Plug the appliance back into the electrical outlet. °F LED turns on.
Diagnosis: Confirm
that °F LED is on. If not, check CB POWER connector for 115VAC. If 115VAC is not
present, check power supply and power cord connection. If 115VAC is present and
°F LED is not on, replace CB.
present, check power supply and power cord connection. If 115VAC is present and
°F LED is not on, replace CB.
6) Press the power button for 2 sec. to turn on the appliance.