Stulz CSD542A PEC Aircon

[chimbo]

Anybody has any problems with this type of PEC aircon. Thanks

[haslie]

what are the problem if i can share

[macbool]

Hi chimb and hasli,want any detail of stulz product,i am stulz employe.

[superswill]

we have three of these

in our biggest customers comm's room and having never worked on stulz products before i must say that they have been great,bar the odd room RH/return air sensor going, touch wood we have never had a problem with them and the UK technical backup has been very impressive

[HeathT]

I work for a company who are service agents for stulz in he North of UK. Any problems I would be happy to help where I can

[Radlam]

I got called to a problem with 2 Stulz units, C6000's. One was bringing fault code up for Compressor Low Pressure. Fixed this as it had a refrigerant leak.

The 2nd was coming up with Compressor High Pressure. Checked all the obvious things like outdoor condensor fans, filters etc but after spending half a day onsite, I could not find why it would suddenly trip out on this fault. Pressures maintained a constant 55psi/220psi.

Any ideas?

[superswill]

I got called to a problem with 2 Stulz units, C6000's. One was bringing fault code up for Compressor Low Pressure. Fixed this as it had a refrigerant leak.

The 2nd was coming up with Compressor High Pressure. Checked all the obvious things like outdoor condensor fans, filters etc but after spending half a day onsite, I could not find why it would suddenly trip out on this fault. Pressures maintained a constant 55psi/220psi.

Any ideas?

what it one of these



http://ats.stulz.com/uploads/pics/202_038_2_copy.jpg

these floor mounted type are forever getting blocked condenser coil,did you disconnected the condenser fans and see if the HP switch if working correctly

[HeathT]

Look on wiring diagram to see what terminal the hp switch wires back to before going out to control circuit.Check all the connections for good contact and if ok then: From A1 on the terminal block which is your 24V supply wire in a bit of cable to link out pressure switch. With Gauges connected run the unit up and monitor the running pressures. If the prssures are good I would say you have a faulty hp switch, i have had a few go on me. Be warned that there is no shrader behind the hp switch when you come to changing one.

[zulkarnain]

what are the problem if i can share

In this case, please refer to Stulz it may help you.

[zulkarnain]

I got called to a problem with 2 Stulz units, C6000's. One was bringing fault code up for Compressor Low Pressure. Fixed this as it had a refrigerant leak.

The 2nd was coming up with Compressor High Pressure. Checked all the obvious things like outdoor condensor fans, filters etc but after spending half a day onsite, I could not find why it would suddenly trip out on this fault. Pressures maintained a constant 55psi/220psi.

Any ideas?

Check your filter drier and change it.

[nileshbraut]

Anybody has any problems with this type of PEC aircon. Thanks

I am in India, newly working on stulz units pls send me wiring diagram of PACs

[alex1081]

Hi nileshbraut , did you solve the problem on stulz aircon ?

Alessio

[billywizz]

Had similar alarm coming up on downdraught unit on startup so thought HP switch faulty, also had no wiring diagram. With help from Stulz UK decided problem was thermistor module on compressor, ordered replacement and unit worked ok. Comp was cold and control voltages were ok but dropped out on start up. If your compresser runs then stops could be compressor internal temperature getting to high