Heat Controller Water Source Heat Pump Section, Table of Figures, Start-Upand Troubleshooting

Section 4
5.0 Troubleshooting		21
5.1 General Troubleshooting		21
5.1.1	Communications Troubleshooting Checklist	21
5.1.2	General Troubleshooting Checklist	22
5.2 Alarms		23
5.3 Checking Comm. Loop Voltages		24
5.3.1	Checking the CommLink II Network Loop	24
5.3.2	Checking the Comm Loop at the CommLink II	25
5.3.3	Checking the CommLink II Driver	26
5.3.4	Checking the MiniLink Network Loop	27
5.3.5	Checking the MiniLink Network Driver	28
5.3.6	Checking the MiniLink Local Loop	29
5.3.7	Checking the Local Loop at MiniLink	30
5.3.8	Checking the MiniLink Local Loop Driver	32
5.3.9	Checking the Local Loop at a WHP Controller	33
5.3.10	Checking WHP Controller Driver Chip	34
5.4 Troubleshooting Loop Controller		35
5.4.1	Checking the Loop Controller Analog Inputs	35
5.4.2	Checking the Loop Controller Outputs	37
5.4.3	Checking the Local Loop at a WHP Loop Controller	38
5.4.4	Checking WHP Loop Controller Driver Chip	39
5.4.5	Comm Driver Chip Replacement	40
5.5 Temperature Sensor Resistance Chart		41
5.6 Pressure Sensor Voltage Chart		42
Notes:	............................................................................	43
Table of Figures
Figure 4-1:System Wiring Overview		2
Figure 4-2:Communications Loop Routing		3
Figure 4-3:WHP Controller Component Layout		5
Figure 4-4:Typical WHP Controller Wiring Diagram		8
Figure 4-5:Loop Controller Inputs & Outputs		13
Figure 4-6:Diagnostic LED Blink Codes		14
Figure 4-7:Diagnostic LED Blink Codes		15
Figure 4-8:Communications Loop Wiring		18
Figure 4-9:MiniLink Address Switch Setting		19
Figure 4-10:WHP Controller Address Switch Setting		20
Figure 4-11:Comm Driver Chip Replacement		40

Start-Up and Troubleshooting