Hoshizaki REFRIGERATED PREP TABLE WITH RAISED RAIL 73168 User Manual download pdf (Page 33)

Problem Possible Cause Remedy

[1] The unit will not

start.

a)Power Supply 1. Unplugged, off,

blown fuse, or tripped

or defective circuit

breaker.

1. Turn on, replace, or check

and reset. Call electrician if

breaker trips repeatedly.

2. Loose connection. 2. Tighten.

3. Not within

specications.

3. Refer to nameplate and

correct.

b)Cord and Plug 1. Defective. 1. Replace.

c) Control Switch 1. "OFF"position. 1. Moveto"ON"position.

2. Bad contacts. 2. Check for continuity and

replace.

d)Transformer 1. Open coil winding. 1. Check continuity and

replace.

e)Wiring to Control Board 1. Loose connections or

open.

1. Check for continuity and

replace.

f) Control Board 1. In alarm. 1. See"III.A.AlarmSignals."

2. Defective. 2. Replace.

[2] Cabinet, rail, or

condenser fan will

not start.

a)Fan Motor 1. Motor winding open. 1. Replace.

2. Bearing worn out. 2 Replace.

3. Wiring to fan motor. 3. Check for loose or open

connection, and replace.

4. Fan blade bound. 4. Check and replace.

b)Evaporator Fan, Rail

Fan, or Compressor

Relay

1. Bad contacts. 1. Check for continuity and

replace.

2. Coil winding open. 2. Replace.

c) Control Board 1. Defective. 1. Replace.

[3] Compressor will

not start or stops

operating.

a)Compressor Relay 1. Bad contacts. 1. Check for continuity and

replace.

b) Compressor Control

Relay

1. Bad contacts. 1. Check for continuity and

replace.

2. Open winding. 2. Replace.

c) Start Relay 1. Bad contacts. 1. Replace.

2. Coil winding open. 2. Replace.

d)Start Capacitor 1. Defective. 1. Check and replace.

e)Wiring to Compressor 1. Loose connection(s). 1. Tighten.

2. Faulty. 2. Check continuity and

replace.

7. Control Board Alarms (EA and ED)

"EA"isdisplayedwhenanEEPROMwriteerrorisdetected."ED"isdisplayedwhenan

EEPROM verication or read error is detected.

Reset Options

Replacing the control board with a functioning control board will eliminate this alarm

condition.

B. Service Chart

1. No Operation

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 65 66

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Hoshizaki REFRIGERATED PREP TABLE WITH RAISED RAIL 73168 User Manual Page 33

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