compressor HP | Yes |
alarms |
|
No |
|
compressor LP | Yes |
| |
alarms |
|
No |
|
partially | Yes |
frozen |
|
evaporator |
|
No |
|
compressor | Yes |
overheating |
|
No |
|
high ambient | Yes |
| |
temperature |
|
No |
|
user alarms | Yes |
| |
No |
|
smoke/fire alarm | Yes |
| |
(optional) |
|
No |
|
cold/noisy Yes compressor
high outside
temperature: No consult supplier
low outside temperature: No
check
refrigerant charge
locked filter | No |
dryer: |
|
replace it |
|
|
|
suction pipe
heats up when No compressor stops: replace compressor
leak of refrigerant: repair leak and No
recharge
act as necessary
act according to local regulations
too much | No |
refrigerant: |
|
reduce charge |
|
|
|
excessive | No | dirty | No | |||||
condenser: | ||||||||
refrigerant charge: |
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| ||||
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| clean |
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| ||||
reduce charge |
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| ||||
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| it |
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| |||
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| ||
No |
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| |
low condensing | Yes | faulty | No | |||||
fan PV | ||||||||
(temperature) |
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| ||||
|
| pressure switch: |
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| ||||
pressure |
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| ||||
|
| replace |
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| ||||
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| |||
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|
| No |
|
| |
capillary locked: | No | reduced | Yes | |||||
replace |
|
| air flow |
|
| |||
|
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| |
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| |
excessive | Yes | high room |
|
| ||||
temperature: |
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| ||||||
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| |||||
superheat |
|
| reduce temp. |
|
| |||
|
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| |
|
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|
| Yes |
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| |
|
|
|
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|
|
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| |
locked freecooling | No | partially | No | |||||
damper: unlock |
|
| frozen |
|
| |||
servocontrol |
|
|
|
| ||||
|
| evaporator |
|
| ||||
fault: replace |
|
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| ||||
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| |||
|
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| |
| Yes |
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| |
|
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|
|
| |
|
|
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|
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|
|
| |
faulty external |
|
| compressor not | Yes | ||||
|
| under power: | ||||||
sensor: replace |
|
| check electrical |
|
| |||
|
|
|
| and control circuit |
|
| ||
|
|
|
|
|
|
|
| |
| No |
|
|
| No |
|
| |
|
|
|
|
|
|
|
| |
faulty room | No |
| faulty compr. |
|
| |||
| substitute by |
|
| |||||
sensor: replace |
|
| expert technician |
|
| |||
|
|
|
|
|
|
|
| |
capillary fault: replace
burnt out fan | No | pressure switch/ | No | pressure switch/ | |
motor: replace |
| ||||
|
| or capillary |
| miscalibrated: | |
|
| locked: rectify |
| recalibrate | |
leak of refrigerant:
repair leak and
recharge
clogged filters or locked air flow: verify
unit is not | No | hot compressor | No | |
cooling |
| or klixon |
| |
|
|
| intervention |
|
|
|
|
|
|
| Yes |
| Yes |
|
|
|
|
|
|
leak of refrigerant:
is the compressor repair leak and
faulty?recharge
No
excess current absorption: call expert technician
No
noisy compressor:
substitute by
expert techncian
No |
|
low ambient | Yes |
temperature |
|
unit is | No | unit is not | No |
cooling |
| heating |
|
|
|
| |
|
|
|
|
Yes |
| Yes |
|
|
|
|
|
unit in |
| electrical | Yes |
dehumidification |
| heaters are off |
|
wait for |
|
|
|
temperature to rise |
|
|
|
No |
|
|
|
|
|
|
|
faulty room |
|
|
|
sensor: replace |
|
|
|
|
|
|
|
faulty control circuit wiring: check el. circuit
no power
arriving: check electrical circuit and safety
No | faulty control | No | reduced | Yes | clogged filters | |
function: replace | or locked air | |||||
|
|
| ||||
|
| air flow |
| |||
|
|
|
| flow: verify | ||
|
|
|
|
| ||
|
|
|
|
|
|
element burnt
No out: replace and check
electrical circuit
page 11 | English |
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|