Table of Contents
Advertisement
Quick Links
Service Manual
Service Manual
- 1 -
Commercial Top Mount Reach-In Freezer
Solid door:
178Z1FHC, 178Z1FWMS, 178Z2FHC, 178Z2FWMS
03/2023
NOTICE
• This manual is for a certified service technician and should not be used by those who are not properly trained.
• This manual cannot cover all possible conditions that may occur and is not intended to be all encompassing.
• You should read this manual in its entirety and the specific repair you wish to do prior to starting the repair.
• This will allow you to determine if you have the correct tools, instruments, and skills to perform the procedure.
Advertisement
Table of Contents
Related Manuals for Avantco 178Z1FHC
Summary of Contents for Avantco 178Z1FHC
- Page 1 Service Manual - 1 - Commercial Top Mount Reach-In Freezer Solid door: 178Z1FHC, 178Z1FWMS, 178Z2FHC, 178Z2FWMS 03/2023 NOTICE • This manual is for a certified service technician and should not be used by those who are not properly trained. • This manual cannot cover all possible conditions that may occur and is not intended to be all encompassing.
-
Page 2: Table Of Contents
Service Manual P. 2 Troubleshooting ............................... 3 Part Testing ................................5 Controller Testing ..............................5 Evaporator Fan Motor Testing ..........................5 Condenser Fan Motor Testing ..........................5 Temperature Probes, Evaporator, Cabinet, Condenser ................5 Defrost Heater Element ............................6 Evaporator pan heat element ..........................6 Drain line heater .............................. -
Page 3: Troubleshooting
Service Manual P. 3 Troubleshooting Problem Possible Solution Unit turns off before Ensure proper voltage on the plug reaching set temperature Ensure condenser coil is clean Ensure controller is sending power to compressor Check compressor for power Inside cabinet fan not Check parameters on controller working Check controller is telling evaporator fan to run... - Page 4 Service Manual P. 4 Problem Possible Solution Unit will not turn on Ensure that unit is plugged in Ensure the outlet is correct and dedicated and has power Check power switch Check controller Unit not getting to set Ensure door is properly closed temperature Check door gasket for rips, tears, cut, etc.
-
Page 5: Part Testing
Service Manual P. 5 Part Testing Controller Testing (Fig. 1) - Check for 120 volts between black (L) and white (N) wires, main power, orange terminal connector. - Check for 120 volts between red (compressor) and white (N) wires, compressor ON only. - Check for 120 volts between yellow (fan) and white (N) wires, fan ON only. -
Page 6: Defrost Heater Element
Service Manual P. 6 Part Testing Defrost Heater Element Controller must be in defrost mode (Fig. 4) - Check for 3.6 amps +/- 10% on the gray (power) wire at the plug. - Check for 120 volts between gray (power) wire at the plug end and the white (neutral) wire at the controller. -
Page 7: Compressor And Capacitor
Service Manual P. 7 Part Testing Max Load Locked Rotor Amps Model # Amps (LRA) Compressor and Capacitor 178Z1RHC 3.6 Amps 22.4 Amps With the unit ‘ON’ and the controller calling for 178Z2RHC 7.2 Amps 44.1 Amps compressor to run then: - Check for 120 volts at main compressor plug between the red and white wires (Fig. -
Page 8: Temperature Controller Settings
Service Manual P. 8 Temperature Controller Settings To access settings on temperature controller, press the ‘PROGRAM’ button until the display shows three dashes and the ‘SET’ button. (Fig. 10) 2. Press the ‘SET’ button to make the ‘SET’ and ‘ON-OFF’ flash. 3. - Page 9 Service Manual P. 9 Temperature Controller Settings Code Description Options Defaults Unit of measure °C or °F °F Display decimal point Visible or Not Visible Visible Timed delay for high & 0 to 240 minutes 60 minutes low temperature alarm High temperature alarm 1 to 240 minutes 15 minutes...
- Page 10 Service Manual P. 10 Temperature Controller Settings Code Description Options Defaults 0 = always ON Evaporator fan manage- 1 = activation based on Sd - Sv ment 2 = activation based on Sd 3 = activation based on Sv Evaporator activation (ONLY IF F0 = 1,2,3) temperature 41°F...
-
Page 11: Part Repair
Service Manual P. 11 Part Repair Evaporator Parts • Ensure unit is turned off and unplugged. • Gain access to the top rear of the unit. • Remove the Phillips screws holding the power cord in place. (Fig. 11) • Remove the hex bolts holding the rear top cover of the unit. -
Page 12: Cabinet Temperature Sensor
Service Manual P. 12 Cabinet Temperature Sensor • Remove cabinet temperature sensor by removing the Phillips head screw holding sensor cage to cabinet ceiling. (Fig. 16) • Open the sensor cage by pulling apart and save for new sensor. • Disconnect wiring (blue wires) from the back of Fig. -
Page 13: Condenser Parts
Service Manual P. 13 Condenser Parts 1. Ensure unit is turned off and unplugged. 2. Remove the screws holding the front condenser cover in place. Open front door(s) to access them and use a 7mm socket. Flip up the cover, if needed to access the condenser tray parts. -
Page 14: Capacitor
Service Manual P. 14 Capacitor 11. Before removing wiring for capacitor, ensure it has been safely discharged. 12. Remove compressor wiring cover with a flat head screwdriver. Insert into tab on top of cover and press down and away to remove. (Fig. 25) 13. -
Page 15: Wire Diagram
Service Manual P. 15 Wire Diagram 178Z1FHC, 178Z1FWMS... -
Page 16: 178Z2Rhc
Service Manual P. 16 Wire Diagram 178Z2FHC, 178Z2FWMS... -
Page 17: Parts Diagram List
Service Manual P. 17 Parts Diagram List 178Z1FHC, 178Z1FWMS Item # Description Part # Item # Description Part # 4” caster, no brake 17819301 Starting components Call manufacturer 4” caster, with brake 17816412 Compressor 17812363 LED light 17813648 Filter drier... -
Page 18: 178Z2Rhc
Service Manual P. 18 Parts Diagram List 178Z2FHC, 178Z2FWMS Item # Description Part # Item # Description Part # 4”caster, no brake 17819301 Compressor 17810048 4” caster, with brake 17816412 Filter drier 970C032S LED light 17813648 Condenser fan motor 17815759 Shelf track - right 17816510 Condenser fan cover...
Need help?
Do you have a question about the 178Z1FHC and is the answer not in the manual?
Questions and answers