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9) MACHINE NOT WORKING?
ONLY A COMPETENT ELECTRICIAN
SHOULD ATTEMPT TO RECTIFY
ELECTRICAL SUPPLY PROBLEMS. DO
NOT REMOVE ANY PANELS FROM THE
MACHINE.
Problem - No air flow from room unit.
Diagnosis -Red (Green on PAC22mk3)
"MAINS" light off.
Cure - Turn on electricity and/or check
mains supply fuse.
Problem - No air flow from room unit.
Diagnosis - Red (Green PAC22mk3)
"MAINS" light on, White "DEFROST" light
on.
Cure - Machine in defrost mode, do not
adjust anything, machine will revert to
normal run after 10 mins.
Problem - Insufficient air flow from room
unit.
Diagnosis - Blocked air filter.
Cure - Clean filter
Problem - No cooling. NOT PAC22 MK 3
Diagnosis - Green "COOLING" light off.
Cure - Revolve thermostat knob fully
anticlockwise to "1". Wait 10 minutes for
time delay on start-up.
Problem - No cooling. PAC22 MK 3
Diagnosis - Amber "COOLING" light off.
Cure - Change value of set point on digital
thermostat to a lower setting.
Problem - No cooling.
Diagnosis - Amber
"ATTENTION"(PAC22mk3 Red High
Pressure fault) light illuminated. High
pressure trip.
Cure - Press "+" button to re-set and check
for :-
Lack of water flow ... kinked hoses?
Shortage of water ... top up.
External heat exchanger unit
mounted in very high temperature?
Water frozen? Add glycol (33%).or 50% in
PAC/HEX6500AHXS
External heat exchanger coil blocked with
dirt.. clean.
Air cooled units.. lack of air flow from
exhaust.. kinked or blocked duct, duct too
long.
Problem - No Cooling.
Diagnosis - Amber "ATTENTION"
(PAC22mk3 Red Low Pressure fault) lig
light illuminated. Low pressure trip.
Cure - Press, "-" button to re-set and
check for No air flow, blocked filter?
Evaporator blocked with ice. Very low air
temperature?
Problem - No cooling.(PAC22AX)
Diagnosis - Amber "ATTENTION"
(PAC22mk3 Red Condensate discharge
fault) light illuminated. High level
condensate trip.
Cure - Condensate pump not reducing
water level. Kink in condensate tube
between room unit and external heat
exchanger? Leak inside room unit. Sump
filter inside room unit blocked. Condensate
tube frozen.
WACPAC ONLY IN PAC MODE
Problem - Water pump not working.
Diagnosis - No fluid flow.
Cure - Is switch in back of unit in the "1"
position. If in "0" position switch to "1"
position.
Problem - No cooling.(ET15AX)
Diagnosis - Amber "ATTENTION" light
illuminated. Bottle fitted switch trip.
Cure -
Problem - No cooling (PAC15AX/
ET15AX
Diagnosis - Amber "CONTAINER FULL"
light illuminated. High level condensate
trip.
Cure - PAC15AX
ET15AX
ET15AX
Page 23
ET15AX with pump kit.
Ensure link fitted to terminal
block.
ET15AX with bottle.
Remove and empty
container, then replace in
machine.
As PAC22AX
With condensate kit -
As PAC22AX.
With bottle.
Remove and empty
container, then
replace in machine.
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