U1.5 L208A Conversion - McQuay MWM Service Manual

MCQUAY Service Guide Book
6.3 U1.5 L208A Conversion
All single split indoor units with U1.5 PCB cannot
be directly replaced by the new L208A PCB
because of the following:-
MCK/M5CK-A/AR & MCK/M5CK-C/CR
U1.5 - The connector on the PCB (CN6) for the
inter-connector cable has 16 pins.
L208A - The connector on the PCB (CN5 & CN6)
for the inter-connector cable have 12 & 2
pins.
MCM/A5CM-D/DR & MCM/A5CM 062C/CR
U1.5 - The connector on the PCB (CN6) for the
assy. LED cable has 16 pins
L208A - The connector on the PCB (CN5) for the
assy. LED cable has 12 pins.
L2 Spare Parts can be ordered via e-Distributors
website under Spare PARTs Ordering. The Part
number is PI-C-R0094.
The L2 Spare PARTs Package contains the
following items:-
Item 4
Item 3
1. L2 08A Heat Pump PCB.
2. Room sensor, indoor coil sensor inter-
connector
connector wire.
3. Inter-connector cable from main board to MCK-
A/AR panel.
4. Inter-connector cable from main board to MCK-
C/CR panel.
5. Intermediate board with 2 sets of cables, which
is stick on the main board.
6. Inter-connector cable from main board to MCM-
D/DR assy. LED board.
7. Inter-connector cable from main board to MCM
062C/CR assy. LED board.
Remarks
The intermediate board with 2 sets of cables,
which is stick on the L208A PCB (Item 1 & 5) is
ONLY applicable for MCM/M5CM-D/DR and
MCM 062C/CR models with originally using U1.5
PCB.
Item 1 & 5
Item 7
PART Number: PI-C-R0094
37
Controller Configuration
wire, outdoor coil
Item 6
sensor inter-