panasonic cu250h1hpp urban range

[install monkey]

help im after a service manual for this condenser, got problems in heating mode, on start up compressor runs for about 5mins,causing the condenser to frost up then outdoor fans fire up, ive checked coil thermistor,air thermistor,and discharge pip thermistor system operates ok in heating/cooling mode but its no good if liq slugging back. oh ive desoldered the fan relay and fitted a new one onto the board, and yes coil is clean,my e mail add is on my v card ta

[frank]

Hi IM

The Panasonic Urban range is badged Daikin. Does the controller look like a Daikin ?

[install monkey]

yep its matsu****a, when daikin/panasonic bits were compatable, any ideas on the comparable daikin model, non inverter heatpump, 250 capacity(25kw)

[install monkey]

m.a.t.s.u.s.h.i.t.a. needs taking of the swear server haha

[frank]

What gas it it on?

[install monkey]

407c- tried daikin extranet for a ry250 but no joy in either 22 or 407

[frank]

Just had a look in my cd files but I'm only showing the RP250 and the later RZQ250 on 410a.

I'll have a look in the office info in the morning but I've got a feeling that the RY & RR version was only issued in printed form - not in pdf.

[install monkey]

it could be a rp250, i was guessing at ry250,your prob right regarding the paper manual,if u like u could scan them for me and ill give u rep points!

[frank]

I've found the manual but it's not in pdf. Doesn't really tell you a lot about the operation of it though, it's more a technical data book - see attached page

[install monkey]

thats the beastie frank, the wiring diagram dictates that power for the condenser fans comes off the outgoing side of the contactor, providing 240v to the cond fan plugs via 2 pcb relays, these have been replaced to try and solve the issues, but to no avail, surely the condenser fan pcb relays are controlled of the cond coil sensor or the ambient air sensor so as i cannot interrogate furthur then plan B- there is a way of bypassing the relay so 1 fan operates as soon as the compressor starts,this is gonna be done on monday

[stufus]

Dear Monkey
Taking it upon one's self to bypass safety devices for one's pleasure is not advised!!
Simply write it off and supply a replacement at an inflated price like the rest of us.
But steer clear of ali pipe unless you know someone with the inside track

Best wishes

Stu

[install monkey]

stu- but bypassing the ryf relay i am ensuring that when the comp starts a cond fan starts too,the safety devices are all in tact, the fan plug only has 1 speed so all will be ok, pressure switches,discharge temp,comp overload,fan thermistors,as well as phase protection would still be operational

[stufus]

Glad to hear it monkey
Carry on so.
Just checking.
Cheers
Stu