In researching the ppd's to change over my RS4 PDA to an iAqualink I stumbled upon this list that I thought might be useful to others who have older chips in their system as there is some references to Freeze Protect updates that may or may not effect them. I have a ppd right before they switch to a cpu style board and my freeze protect does not chatter the motor.
JANDY PPD REVISION CODES
A Programmable Peripheral Device (PPD) with revision letter C to HH will operate with all PCBs with a 44 pin
socket.
A Revision I or II PPD will only operate with a PCB which has a 44 pin socket and is a Revision I PCB.
A Revision J or newer PPD will only fit into a PCB with a 52 pin socket (second generation of PCB).
1994-Rev. A = Alpha testing.
1995-Rev. B = Beta testing.
1996-Rev. C = First production AquaLink RS.
1996-Rev. D = Allowed Cleaner JVA socket to be assigned to an auxiliary by turning on dip switch 7.
1996-Rev. E = Programmed ON times not recognized after freeze protection activates.
1996-Rev. F = RS 2/6 Sharing a heater support, light dimming on RS 4.
1997 – Rev. G = First support for SpaLink RS, Cleaner JVA can be assigned without turning on dip 7.
1997 – Rev. GG = Cancel button locks-up system.
1997 – Rev. GGG = Correction to GG.
1998 – Rev. H = First support f or LX / RS 485 connection, memory expansion to 128K of ROM, SpaLink reads
pool temperature and OFF when the system is not on.
1998 – Rev. HH = Corrects time calibration problem with Rev. H.
1998 – Rev. HH 232 = Support for RS 232 Serial Adapter.
2000 – Rev. I = First support for OneTouch, includes serial adapter support. Note Rev I will only operate in a Rev.
I PCB.
2000 – Rev. II = Corrects problem with auxiliaries assigned to freeze on OneTouch.
2002 – Rev. J = Change to 52 PIN PPD and new socket on AquaLink RS PCB.
2002 – Rev. JJ = Corrects problem with auxiliaries assigned to freeze on OneTouch.
2003 – Rev. K = Support for FlowLink, items manually turned on will reactivate after going to Auto/Service/Time
Out.
2004 – Rev. L = Color Light Control, PC Docking, Laminar Light Pulse Control (LPC4), Chiller/Heat Pump
operation, Run Time (circuits can be set to run manually f or 1 t o 10 minutes or for 10 minutes to 2 hours in 10
minute increments). Will communicate directly with AquaPure Chlorine Generator only.
2006 – Rev. M = Support for AquaPalm wireless remote, Change chlorine production from AquaPure. AquaPure
(revision must be 11230A05 or newer). Assign OneTouch buttons to SpaLink RS buttons.
2006 – Rev. MM = Corrects problem when entering into lights labels.
2006 – Rev. MMM = Corrects problem associated with daylight savings which caused the AquaPalm to jump
lines. Light dimming can be adjusted from AquaPalm.
CPU REVISION CHANGES
2007 – Rev. N = Complete change to PCB. The operating chip is no longer a PPD, it is now a CPU (Central
Processing Unit) board. The AquaLink RS can be connected via the RS 485 line to a Jandy AE Heat Pump &/or a
Jandy LXi Gas Heater.
2008 – Rev O = Communication with Variable Speed pumps.
2009 – Rev P = Communication with ChemLink, LM3, AutoClear Plus & DuoClear.
2010 - Rev Q = first support for Touch Screen panel.
2012- Rev R = internet control of Jandy Aqualink system via smartphone or web
It also appears that Sunplay (
http://www.sunplay.com/Zodiac-iAquaLink ... 900-rs.htm) has the best price that I found on an latest board (if you need to replace) that will allow the PDA to work and you would also get remote (or extra access with tablets as is my case with using smart phones/tablets/web browsers since my PDA is starting to show it's age). Apparently you would lose the ability to program times through the pda menus (need to program through the web access instead) but retain the ability to do on/off, heater adjust, etc on the pda.
I am by no means an expert on this, just sharing a little info that I found that might help others understand or make a better decision if they need to head down that road. GL
