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chiller compressor high pressure alarm
hi guys.
im have been in the air conditioning trade for 9 years now mainly doing installs on vrvs and split systems.
today i got asked to look at a climaveneta chiller which feeds a big shop in a shopping centre <1 of many>
when i got there on the control panel it says 'compressor high pressure alarm'
there was no way of runnig the system until the fault is rectified. coils are clean and so are filters fan motors seem good. i didnt want to go any further as i am not confident enough and didnt want to balls it up even more.
i woud really like to know what could be causing this as i hate being defeated could anybody please shed some light on what could be causing this fault.
many thanks
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Re: chiller compressor high pressure alarm
High pressure above settings will stop the compressor and set alarm off.
The reason can come from a few places, some of condenser fans not running, too much refrigerant, air in the system, a nylon sheet blocked the entering air, faulty high pressure sensor.
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Re: chiller compressor high pressure alarm
There is only 1 fan for condenser the other fan is inside the unit attached to a belt. 1 thing i forgot to .ention is they are ducting their heavy duty dishwasher into the a/c duct and obvioisly when the unit doesnt run the steam is backing up the duct and dripping all over the ceilings
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Re: chiller compressor high pressure alarm
What has ducting and dishwasher discharge got to do with a chiller?
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Re: chiller compressor high pressure alarm
Ok maybe its not a chiller its an ac unit on the roof a package unit
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Re: chiller compressor high pressure alarm
can we clarify-the clima venta chiller on the roof- has 1 fan on it, this chiller serves a shopping ctr, so were talking big stuff
a commercial dishwasher exhaust is ducted onto the return air of the air handlng/fan coil unit- which is belt driven.
-whats the model number of the chiller
-ur fault is with the chiller -hp alarm, requires resetting then moniter running pressure,td accross cond coil,checking the running current of the outdoor fan motor- ensuring the overload is rated 125% over the running current.
find the hp switch if its manual reset, isnt nuisance tripping
try these codes for alarm resetting
125
348
0348
9990
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Re: chiller compressor high pressure alarm
Do u know what type of ac im talking about as i said i only really work with vrv and split systems. Its just trally bugging me and want to get my head round it
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Re: chiller compressor high pressure alarm
chiller - water circuit
split- gas circuit
:confused:
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Re: chiller compressor high pressure alarm
It is r407c with 1 3phase compressor. I cant reset it it says the fault needs to be rectified before you can run system
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Re: chiller compressor high pressure alarm
The motor with the belt blows the air into the building and the fan on top of the condenser rejects the heat right? Then at the end other end of unit is where the duct comes back and where they are rejecting their dishwasher discharge
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Re: chiller compressor high pressure alarm
manual hp reset - on the discharge pipe- or ranco/sanyagia/penn tiny reset latch
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Re: chiller compressor high pressure alarm
rooftop unit:)
Quote:
Originally Posted by
paulrs86
The motor with the belt blows the air into the building and the fan on top of the condenser rejects the heat right? Then at the end other end of unit is where the duct comes back and where they are rejecting their dishwasher discharge
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Re: chiller compressor high pressure alarm
Sorry i dont understand. How do you manual reset?
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Re: chiller compressor high pressure alarm
little push button on the pressure switch
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Re: chiller compressor high pressure alarm
So if fans and coils are good where would i best best to look next? Will i deffinatrly be able to do a manual reset?
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1 Attachment(s)
Re: chiller compressor high pressure alarm
Attachment 10715red button .......
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Re: chiller compressor high pressure alarm
hp switch will be near the compressor (big heavy thing that chuggs)- mounted on the discharge pipe (smaller hot pipe) if theres no button to press on the pressureswitch, u may need to aknowledge the alarm on the touchscreen controller( try the codes earlier mentioned for access to reset fault)
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Re: chiller compressor high pressure alarm
Thanks alot so once ive reset it il be able to run the unit and check currents and pressures
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1 Attachment(s)
Re: chiller compressor high pressure alarm
or one of these
Attachment 10716
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Re: chiller compressor high pressure alarm
hopefully- im lookin for climaventa kit to see if u recognise it as were clutching at straws
Quote:
Originally Posted by
paulrs86
Thanks alot so once ive reset it il be able to run the unit and check currents and pressures
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Re: chiller compressor high pressure alarm
http://www.climaveneta.com/GLOBAL/Pr...rooftop-units/
click on link above- is it one of these??- let us know model number
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Re: chiller compressor high pressure alarm
I got mixed up its not climaveneta they was from yesterdsy i cant remeber the name air something air conditioning big blue panels lol
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Re: chiller compressor high pressure alarm
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Re: chiller compressor high pressure alarm
BLUEBOX!- u sure???- u deffo working on the right system???- :p
the pressure switch on the hot pipe should be the same -as for passwords-
300 Maint.200 Prog.
400 Store
0003 Factory
0001 Time
feel sorry for any moderator who has to clean this thread! :o
Quote:
Originally Posted by
paulrs86
I got mixed up its not climaveneta they was from yesterdsy i cant remeber the name air something air conditioning big blue panels lol
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Re: chiller compressor high pressure alarm
Ah that danfoss dual pressure control is on the unit :)
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Re: chiller compressor high pressure alarm
Its not called bluebox ut it looks like a bluebox manufactured in 2006
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Re: chiller compressor high pressure alarm
before we continue- can u comfirm its one of these
http://www.bluebox.it/en/
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Re: chiller compressor high pressure alarm
I k ow the maint and service passwords one is 0003 and other is 0002 i think
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1 Attachment(s)
Re: chiller compressor high pressure alarm
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Re: chiller compressor high pressure alarm
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Re: chiller compressor high pressure alarm
So far I'm amused, it might even work by dawn...
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Re: chiller compressor high pressure alarm
It was called air ________ air conditioning
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Re: chiller compressor high pressure alarm
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Re: chiller compressor high pressure alarm
http://youtu.be/RWgR-4dcbc4
blankety blank!!!:D
Quote:
Originally Posted by
paulrs86
It was called air ________ air conditioning
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Re: chiller compressor high pressure alarm
Nope not airedale ive never heard of them before.....
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Re: chiller compressor high pressure alarm
different approach-
what company/shop was the customer??
wheres the site?
can u spot it on google street maps??
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Re: chiller compressor high pressure alarm
can the name on the thread be changed to
blue thing on roof - no name - no worky??:D
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Re: chiller compressor high pressure alarm
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Re: chiller compressor high pressure alarm
Looked on google maps too blury to see them really
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Re: chiller compressor high pressure alarm