REFRIND S.r.l.
Via B.Colleoni 35-37,24060 Gorlago (BG)
Title:
Manuale - Manual (IT-ENG-RUS) -
Инструкция
Rev.04
File: CDH-CDZ MAN-1102075003
Page
20/29
This documentation is under Refrind S.r.l. property and contain legally privileged and/or confidential information. Any
use, distribution, reproduction or disclosure by any other person is strictly prohibited without owner permission.
2.10
Trouble shooting
(*) For triphase version only
COMPRESSOR INTERNAL PROTECTIONS SWITCH ON
CAUSES
ACTIONS
Temporary loss of a power supply phase
Wait for automatic protection switch on
Improper power supply
Use the proper power supply
Not enough refrigerant fluid
Contact a certified technician
Excessive room temperature
Verify the whole system
Obstructed heat exchangers
Clean the exchanger according to the
maintenance procedure
HIGH/LOW PRESSURE CONTROL SWITCH ON
CAUSES
ACTIONS
Fans malfunction
Check electrical circuit/connections
Obstructed exchangers
Clean the exchanger according to the
maintenance procedure
Low air flow
Remove possible obstructions
Not enough refrigerant fluid
Contact a certified technician
THE COMPRESSOR NEVER STOPS
CAUSES
ACTIONS
Conditioned room with open
doors/windows
Close open doors/windows
Undersized unit
Verify the whole system
Not enough refrigerant fluid charge
Contact a certified technician
THE COMPRESSOR NEVER STARTS
CAUSES
ACTIONS
Not enough refrigerant fluid charge
Contact a certified technician
Wrong set-point of the working
thermostat
Change the set-point
Electrical circuit failure
Verify the power supply and the integrity of the
fuses
Too low room temperature
Wait for an higher temperature
NO RECYCLED AIR
CAUSES
ACTIONS
Wrong direction of fan rotation (*)
Correct fan rotation
Obstructed air filter
Clean or substitute the air filter according to the
maintenance procedures
Broken canals
Verify air canals circuit
Cold exchanger frozen
Verify air flow after defrost
