Yaskawa iQpump1000 AC Drive Quick Start - Manual (Page 178)

No. Parameter Name Setting Values
Q2-06 Low Temperature to Run at Minimum Geothermal Speed
Default: 65.0 °F
Min.: -110.0
Max.: 275.0
Q2-07 High Temperature to Run at Minimum Geothermal Speed
Default: 75.0 °F
Min.: -110.0
Max.: 275.0
Q2-08 High Temperature to Run at Maximum Geothermal Speed
Default: 85.0 °F
Min.: -110.0
Max.: 275.0
Q2-09 Geothermal Temperature Loss Detection
Default: 1
Range: 0 to 2
Q2-10 Geothermal Sleep Delay Time
Default: 30 s
Min.: 0
Max.: 3600
Q2-11 Geothermal Temperature Delta Wake Level
Default: 0.0 °F
Min.: 0.0
Max.: 50.00
U1-99 Anti-No-Flow Timer No signal output available
H3 Multi-Function Analog Input Settings
H3-oo
Setting
Function Description
21 Geothermal Temperature
Full scale: Q2-02 = 10 V (or 20 mA), Q2-01 = 0 V (or 4 mA)
This input is internally limited to -999.9 °F to +999.9 °F
F Not Used Disables the functionality of the programmed terminal.
HOA Keypad Display Error Name
oPE29 Geothermal Set Error
Cause Possible Solutions
P1-01 parameter selection is not compatible
with Geothermal Mode (b1-01 = 5).
Confirm b1-01 and P1-01 parameter settings.
HOA Keypad Display Fault Name
TLGI Geothermal Input
Temperature Lost Geothermal Input
The geothermal input is not present.
Cause Possible Solutions
The input signal level has dropped below
3 mA or risen above 21 mA when the drive
was running and b1-01 = 5, H3-0o = 21
(Geothermal Input), H3-0o = 2
(4 to 20 mA), and Q2-09 = 2 (Fault).
Confirm that the device connected to the analog input terminal is installed and working properly.
The drive was running while b1-01 = 5,
H3-0o ≠ 21 (Geothermal Temp), and
Q2-09 = 2 (Fault).
Assign one of the analog inputs to “Geothermal Temperature”, H3-0o = 21.
HOA Keypad Display Minor Fault Name
Geo Params
Chk Q2-05 to Q2-08
Geothermal Mode Parameters
The drive is running at the level set in Q2-03 due to an incorrect setting.
Cause Possible Solution
The temperature parameter values are set
incorrectly.
Set the temperature parameters in the following order:
Q2-08 > Q2-07 > Q2-06 > Q2-05
4.5 iQpump Presets and Functions
178 YASKAWA TOEP YAIP1W 01B YASKAWA AC Drive - iQpump1000 Quick Start Guide