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FORM 160.00-O2
ISSUE DATE: 04/30/2019
SECTION 8 – MAINTENANCE AND TROUBLESHOOTING
MANUALLY RUNNING THE CLOSED LOOP
COOLANT PUMP
The Style B LCSSS is now controlled by a micropro-
cessor. The software for the microprocessor requires
the LCSSS and the OptiView panel to be communicat-
ing through the communication link before the LCSSS
closed loop coolant pump control software is enabled.
In order to manually run the closed loop coolant pump,
all three of the thermistor connectors must be removed
from the Logic/Trigger board. Refer to SECTION 7 –
START-UP INSTRUCTIONS for more LCSSS start-up
information.
COOLANT MAINTENANCE
The LCSSS cooling loop coolant must be changed ev-
ery year. Refer to Fill Cooling Loop on Page 33 for
detailed LCSSS cooling loop fill information.
The probability of SCR heatsink corrosion
is greatly increased if the coolant is not
replaced within the stated time interval.
If a unit failure occurs due to improper
maintenance during the warranty period,
Johnson Controls will not be liable for
costs incurred to return the system to
satisfactory operation.
Should the coolant become cloudy or brown in color, it
must be drained and discarded. Fill the cooling system
with a 50/50 mix of ethylene glycol. Run the cooling
pump for 15 minutes. Drain this mixture from the cool-
ing system, and discard following local guidelines for
proper disposal. Fill the cooling system with distilled
water. Run the cooling pump for 15 minutes. Drain the
distilled water from the cooling system and discard.
Fill the cooling system with the normal running inhibi-
tor. The part number for the one gallon quantity of in-
hibitor is 013-04129-000.
Clear Coolant
There is no need to change the coolant should it be-
come clear. Many samples of clear coolant were tested
and determined to have the same properties as pink
coolant.
Coolant Change Intervals
To ensure that the coolant maintains the designed
properties the coolant must be changed every year.
A coolant failure can result in a very expensive repair.
JOHNSON CONTROLS
Do Not Reuse Coolant
In the event that the coolant must be removed to fa-
cilitate a repair to the LCSSS. All of the coolant must
be drained, discarded, and new coolant installed. There
have been a few events where the drained coolant be-
came contaminated in the storage container. The con-
taminated coolant later failed in the LCSSS. NEVER
REUSE COOLANT!
TROUBLESHOOTING THE CLOSED LOOP
COOLANT PUMP
Should the closed loop coolant pump not function:
1. Verify that the OptiView panel is NOT displaying
a LCSSS INITIALIZATION FAILED message.
This is only a problem on initial power-up of the
LCSSS. If communication between the LCSSS
and the OptiView panel had been established and
then is broken, the manual operation of the closed
loop coolant pump would function. Refer to Ini-
tialization Failed on Page 25 for details about
the LCSSS INITIALIZATION FAILED message.
2. Verify that 7FU and 8FU in the LCSSS are not
open. If they are open, then isolate the circuit to
determine which circuit is shorted. Refer to the
wiring diagram label inside the starter.
3. Verify 115 VAC from wire 107 to wire 2. If 115
VAC is not measured, then verify 4FU and 5FU
in the LCSSS. If these fuses are okay, then verify
input voltage to T1, and T1's primary wiring.
4. If all of the above are verified, then remove the J12
connector and place a jumper in it. If the closed
loop coolant pump starts running, then a circuit
on the Logic/Trigger board has failed. The Logic/
Trigger board must be replaced. If the closed loop
coolant pump does not run, then verify the wiring
to the pump. If the wiring is okay, then replace the
closed loop coolant pump.
TROUBLESHOOTING PROCESSES
The following procedures are designed to guide the ser-
vice technician along the path that leads to the identifi-
cation of the cause of the problem. The service techni-
cian should understand the operation of the LCSSS and
function of each major component and Logic/Trigger
Board. It is recommended that the service technician
read and understand the information contained in this
instruction prior to troubleshooting this product. Also,
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