Samsung Service Guide: E913 Error Code

Subject: E913 Error Code

Models: CHILLER

Title: Water Flow Switch Error

Revision Date: 12/16/2024

Tech Support: (888)-699-6067 (7am to 6pm CST, M-F)

Issue

System will not restart because "Water flow switch error" has been detected 6 times.

Troubleshooting Steps

Make sure the water circulating pump is running.
Check pressure drop across heat exchanger and verify proper gallons per minute (GPM) are flowing through the heat exchanger. Refer to Technical Data Book (TDB) for pressure drop charts. Hyperlink to Chiller TDB
Verify there are no flow control valves, isolation valves or bypass valves closed.
Verify the strainer is clear.
After verifying proper water flow, locate and test pressure transducers for inlet and outlet of heat exchanger located on the hydro board utilizing transducer charts below.

Pressure Charts

High Pressure Chart

High Pressure		High Pressure		High Pressure		High Pressure		Low Pressure		Low Pressure		Low Pressure		Low Pressure
Vout	PSIG	Vout	PSIG	Vout	PSIG	Vout	PSIG	Vout	PSIG	Vout	PSIG	Vout	PSIG	Vout	PSIG
0.5	0	1.5	181	2.5	363	3.5	544	0.5	0	1.5	73	2.5	145	3.5	218
0.6	18	1.6	199	2.6	381	3.6	562	0.6	7	1.6	80	2.6	152	3.6	225
0.7	36	1.7	218	2.7	399	3.7	580	0.7	15	1.7	87	2.7	160	3.7	232
0.8	54	1.8	236	2.8	417	3.8	598	0.8	22	1.8	94	2.8	167	3.8	239
0.9	73	1.9	254	2.9	435	3.9	616	0.9	29	1.9	102	2.9	174	3.9	247
1.0	91	2.0	272	3.0	453	4.0	635	1.0	36	2.0	109	3.0	181	4.0	254
1.1	109	2.1	290	3.1	471	4.1	653	1.1	44	2.1	116	3.1	189	4.1	261
1.2	127	2.2	308	3.2	490	4.2	671	1.2	51	2.2	123	3.2	196	4.2	268
1.3	145	2.3	326	3.3	508	4.3	689	1.3	58	2.3	131	3.3	203	4.3	276
1.4	163	2.4	344	3.4	526	4.4	707	1.4	65	2.4	138	3.4	210	4.4	283
						4.5	725							4.5	290

Diagrams and Components

The document includes a visual of a circuit board with specific areas highlighted. Red boxes indicate connections related to pressure transducers. Arrows point to two connectors on the board.

Additionally, a diagram labeled "CN402-PRESSURE SENSOR" details the pin connections:

#: 1
#2: PHE_IN SIGNAL
#3: GND
#4: 5V

The text "Molex pin connections" is also present.

Proper Personal Protective Equipment (PPE) Required. These photos may not represent your exact system.

For use by Samsung HVAC Trained & Licensed Service Providers Only. www.SamsungHVAC.com

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