FRANCO s.r.l. User and maintenance manual ROOF COOLER
26
6 - TROUBLESHOOTING GUIDE
The operations described in this chapter must only be carried out by authorised and qualified
personnel, using suitable personal protective equipment. Before carrying out any work,
disconnect the power supply and cut off the water supply.
PROBLEM
CAUSE
SOLUTION
The machine does not start
Power failure or incorrect
supply voltage
Check electrical connections and mains
Fan does not start, but water
circulates
Motor power failure or
incorrect motor supply
voltage
Check the motor power supply line
Faulty motor
Check and replace the motor if faulty
The fan runs, but the panels
stay dry (or slightly wet)
Pump power failure or
incorrect pump supply
voltage
Check the pump supply line
Water supply circuit
disconnected
Check the water supply line
Water distribution circuit
disconnected or clogged
Check the pipes/hoses of the water
distribution circuit
The pump is clogged
Clean the pump and tank regularly
The pump is faulty
Check and if needed replace the pump
The float does not fill the tank
Check function and position of float, adjust or
replace if necessary
Panels have mineral
incrustations
The water tank is dirty
Clean the tank
The drain valve does not
work properly
Check the functioning of the exhaust system
and replace if faulty
Checking the times set for unloading
The water hardness is too
high
Check water quality, fit the water system to
the required specifications
Poor cooling action
Undersized system
Review the project, add additional units if
necessary
Sub-optimal air distribution
Reviewing the design and sizing of ductwork
