Troubleshooting

This Troubleshooting Chart is not prepared to replace the training required for a professional refrigeration service person, not is it comprehensive

Troubleshooting Chart

Complaint

 

Possible Causes

 

 

Response

 

1.Unit not

a.

Power cord unplugged

 

a.

Check for power cord plug

 

running

b.

No power to unit

ambient

b.

Check power at receptacle & fuses

 

c.

Setting higher than

c.

Lower temperature setting

 

 

 

temperature

 

 

Decrease the value as to 4 °F

 

d.

Differential too high

 

d.

 

e.

Incorrect or loose wirings

e.

Check all wirings and connections

 

f.

Low voltage

 

f.

Contact an authorized electrician

 

g.

Defrost light blinking

 

g.

Unit is under defrost mode

 

 

h.

Compressor light blinking

h.

Unit waits for anti-short cycle delay

2.Fan running

a.

Post-compressor fan running

a. See 4) to set FON = 0

 

continually

 

mode for humidity modulation

 

 

 

 

 

 

 

 

 

 

3.Temperature

a.

Air sensor

 

a. When using an air sensor, the wine

fluctuating

 

 

 

 

bottle

temperature

is

mainly

 

 

 

 

 

controlled by the average air

 

 

 

 

 

temperature. If the set-point is 55°F

 

 

 

 

 

with the differential 4F, the cooling

 

 

 

 

 

unit turns on at 59°F of air

 

 

 

 

 

temperature and turns off at 55°F of

 

 

 

 

 

air temperature. The average air

 

 

 

 

 

temperature is 57°F, and then the

 

 

 

 

 

wine temperature is around 57+/-

 

 

 

 

 

0.5°F. The air is light enough to

 

 

 

 

 

change so quickly that it maintains

 

 

 

 

 

relatively

constant

average

 

 

 

 

 

temperature that would prevent wine

 

 

 

 

 

bottle temperature from varying.

 

 

 

 

 

4.Temperature

a.

Displaying 55°F, air sensor

a.

Move the air sensor away from the

high, unit

 

contacting the evaporator or in

 

evaporator and supply air

 

stopping and

 

the supply air

 

b.

Lower setting

 

 

starting but

b.

Setting too high

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

short

 

 

 

 

 

 

 

 

running time

 

 

 

 

 

 

 

 

5. Temperature

a.

Incorrect voltage

 

a.

Check for voltage

 

 

high,

b.

Failed thermistor

 

b.

Check thermistor by placing it in ice

compressor

 

 

 

 

water and measuring resistance

c.

Failed components

 

c.

Check compressor

windings, start

stopping and

 

 

 

 

 

relay and overload protector.

starting but

d.

Improper condenser airflow

d.

Check for condenser fan

 

short

e.

Dirty condenser

 

e.

Clean condenser

 

 

running time

f.

Overcharge of refrigerant

f.

Call service for removing refrigerant

 

g.

Discharge or suction

pressure

g.

Call service for OEM information

 

 

too high

 

 

 

 

 

 

- 17 -

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Vinotemp VINO8500HZD, WM-1500-HTD, WM-8500HTD, VINO3500HZD, VINO2500HZD, VINO1500HZD manual Troubleshooting

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