ESIE13-03
|
Part 2. Troubleshooting
2. Error code based troubleshooting
Page 36
13/05/15
|
Version 2.0
Ground source heat pump
2.46. “8F” – Backup heater outlet water temperature error during domestic
hot water operation
2.47. “8H” – Backup heater outlet water temperature error
2.48. “80” – R4T entering water thermistor abnormality
2.49. “81” – Leaving water thermistor R1T abnormality
Trigger
Effect
Reset
R2T (A1P) detects temperature above
75°C during domestic hot water operation.
Unit will stop operating.
Via user interface.
Possible cause
Check
Corrective action
Increased water temp by external heat
source.
Check if another heat source is installed
on the same water circuit.
Correct hydraulic field circuit. Refer to the
Installer Reference Guide.
Faulty thermistor R2T / hydro PCB A1P.
Check thermistor R2T (see
Replace thermistor R2T (see
) or
hydro PCB A1P (see
).
Faulty backup heater contactors (sticking)
K1M, K2M or hydro PCB A1P.
Check backup heater control contactors
K1M, K2M (see
).
Replace the contactor(s) K1M, K2M.
Trigger
Effect
Reset
R2T (A1P) (thermistor after backup
heater) detects temperature above 75°C.
Unit will stop operating.
Via user interface.
Possible cause
Check
Corrective action
Increased water temp by external heat
source.
Check if another heat source is installed
on the same water circuit.
Correct hydraulic field circuit. Refer to the
Installer Reference Guide.
Faulty thermistor R2T / hydro PCB A1P.
Check thermistor R2T (see
Replace thermistor R2T (see
) or
hydro PCB A1P (see
).
Faulty backup heater contactors (sticking)
K1M, K2M or hydro PCB A1P.
Check backup heater control contactors
K1M, K2M (see
).
Replace the contactor(s) or hydro PCB
A1P (see
).
Trigger
Effect
Reset
Thermistor detects an abnormal value
(open or short circuit).
Unit will stop operating.
Auto-reset when problem is solved.
Possible cause
Check
Corrective action
Faulty entering water thermistor R4T
(A1P) / hydro PCB A1P.
Check thermistor R4T (see
Replace thermistor R4T (see
) or
hydro PCB A1P (see
).
Trigger
Effect
Reset
Thermistor detects an abnormal value
(open or short circuit).
Unit will stop operating.
Auto-reset when problem is solved.
Possible cause
Check
Corrective action
Faulty leaving water thermistor R1T /
hydro PCB A1P.
Check thermistor R1T (see
Replace thermistor R1T (see
) or
hydro PCB (see
Содержание EGSQH10S18AA9W
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