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Cold Water Run Troubleshooting Guide
Does TB1 of cold run
controller have 120
VAC?
Step 1
YES
YES
Is the 220VAC inverter in the
Step 2
cold run controller powered?
Does the cold run inverter output
Step 3
12VDC from PCS to pin FS?
YES
Is 24VAC present at Poolstat
Step 4
connection on cold run circuit
board?
YES
Does cold run relay K-6
Step 5
coil receive 24VAC from
MC on circuit board?
YES
Are the Economaster and
Step 6
Interlock leads connected to
N.O. contacts of relay K-6?
YES
Are the Economaster
Step 7
and Interlock leads
connected correctly to
heater CPW board?
YES
Is the injector pump
Step 8
modulating after 2-1/2
Step 9
NO
Is 0-10VDC present at
connection FR of cold run circuit
board?
Step 10
NO
Is there a Call For
Heat at the heater?
NO
NO
YES
NO
NO
NO
Replace circuit board
NO
Correct wiring
NO
Correct wiring
Is the heater tripping the high
YES
NO
Replace cold run circuit board
Does cold run circuit board lock-out on
YES
"Sensor out of Range"?
Verify 120VAC from
TB1 on the heater
and correct
Heater is in standby mode
Correct Wiring
Replace inverter or install jumper
and correct switch settings
Check 24VAC output at J17 of
heater circuit board and correct
Is sensor resistance correct?
NO
Replace sensor
YES
limit?
NO
17
Call our Technical Service Department
1-800-927-2975 Outside California
1-800-627-2975 Inside California
YES
Correct 3Ø pump wiring
NO
Verify pump is rotating in proper
direction
Pump must decrease
YES
RPM's on decreasing 0-
10VDC signal
The unit is okay
NO
YES
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