Question 1

Water is not flowing from any tap when operated but the pump runs

Accepted Answer

Possible cause: The fresh water tank is empty. Check, fill.

Question 2

Water is not flowing from any tap when operated but the pump runs

Accepted Answer

Possible cause: Pump not primed. Refer to manufacturer's instructions

Question 3

Water is not flowing from any tap when operated but the pump runs

Accepted Answer

Possible cause: The pump wired in reverse. Check wiring, refer to the manufacturer's instructions

Question 4

Water is not flowing from any tap when operated but the pump runs

Accepted Answer

Possible cause: The pipe inlet or outlet is disconnected. Check connections

Question 5

Water is not flowing from any tap when operated but the pump runs

Accepted Answer

Possible cause: Pipes restricted by kinks. Check pipe runs

Question 6

Water is not flowing from any tap when operated but the pump runs

Accepted Answer

Possible cause: Blockage in pump inlet or outlet pipe. Check, starting inside the freshwater tank

Question 7

Water is not flowing from any tap when operated but the pump runs

Accepted Answer

Possible cause: Blocked in-line filter or pump filter. Dismantle and clean

Question 8

Water is not flowing from any tap when operated but the pump runs

Accepted Answer

Possible cause: Air leak in suction line to pump. Check for bubbles and secure with a clip

Question 9

Pump does not run

Accepted Answer

Possible cause: Pump or tap wired incorrectly. Refer to pump/tap manufacturer's instruction

Question 10

Pump does not run

Accepted Answer

Possible cause: Pump fuse blown. Check wiring connection then replace with fuse of correct rating.

Question 11

Pump does not run

Accepted Answer

Possible cause: Battery disconnected. Check connections

Question 12

Pump does not run

Accepted Answer

Possible cause: Pump seized or overheated. Refer to manufacturer's servicing instructions

Question 13

Pump does not run

Accepted Answer

Possible cause: If a pressure pump is being used, the pressure sensing switch may have failed. Refer to manufacturer's servicing instructions

Question 14

Pump does not run

Accepted Answer

Possible cause: If a switched tap is being used, the switch may have failed. Refer to manufacturer's servicing instructions

Question 15

Water flows from cold tap but has reduced flow from hot

Accepted Answer

Possible cause: Feed pipe to water heater is incorrectly connected to the heater outlet. Refer to installation instructions

Question 16

Water flows from cold tap but has reduced flow from hot

Accepted Answer

Possible cause: Blockage in hot pipeline. Disconnect pipes and inspect

Question 17

Water flows from cold tap but has reduced flow from hot

Accepted Answer

Possible cause: Heater inlet and outlet pipes have kinks hindering flow. Check and re-route if necessary. Ensure that hose is of recommended type.

Question 18

Water flows from cold tap but has reduced flow from hot

Accepted Answer

Possible cause: Hot tap is not connected. Refer to installation instructions

Question 19

Water flows from cold tap but has reduced flow from hot

Accepted Answer

Possible cause: Hot tap failed or blocked. Disconnect and inspect

Question 20

Water flows from cold tap but has reduced flow from hot

Accepted Answer

Possible cause: Heater non-return valve jammed. Seek service attention

Question 21

Reduced flow from both hot and cold taps

Accepted Answer

Possible cause: Cold water pipe contains kinks, hindering flow. Check and re-route if necessary

Question 22

Reduced flow from both hot and cold taps

Accepted Answer

Possible cause: Blockage in cold pipe line. Disconnect pipes after first 'Y' connector and check up to tap

Question 23

Reduced flow from both hot and cold taps

Accepted Answer

Possible cause: Cold tap not connected. Refer to installation instructions

Question 24

Reduced flow from both hot and cold taps

Accepted Answer

Possible cause: Cold tap failed or blocked. Disconnect and inspect

Question 25

Reduced flow from both hot and cold taps

Accepted Answer

Possible cause: If a Carver Crystal unit is fitted, the cartridge may be exhausted. Replace cartridge

Question 26

Reduced flow from both hot and cold taps

Accepted Answer

Possible cause: Battery condition low causing pump to run slowly. Check state of charge of the battery, refer to electrical supply note

Question 27

Water flows from hot tap but has reduced flow from cold

Accepted Answer

Possible cause: If new taps have been fitted, they may be restricting the flow. Disconnect and check they have a bore of at least 6.3mm

Question 28

Water flows from hot tap but has reduced flow from cold

Accepted Answer

Possible cause: Pump needs servicing. Refer to pump servicing instructions

Question 29

Water flows from hot tap but has reduced flow from cold

Accepted Answer

Possible cause: Partly blocked pump filter or in-line filter if fitted. Dismantle and clean if necessary

Question 30

Water flows from hot tap but has reduced flow from cold

Accepted Answer

Possible cause: Pump outlet has kinks, restricting flow. Check and re-route if necessary.

Question 31

Water flows from hot tap but has reduced flow from cold

Accepted Answer

Possible cause: Water leak. Check all water connections

Question 32

Water difficult to drain

Accepted Answer

Possible cause: 'Y' connectors fitted incorrectly. Refer to installation instructions

Question 33

Water difficult to drain

Accepted Answer

Possible cause: Kinks in the pipes are restricting the flow. Check and re-route if necessary

Question 34

Water difficult to drain

Accepted Answer

Possible cause: Bore size difference in taps. Use taps of equal bore size

Question 35

Water difficult to drain

Accepted Answer

Possible cause: Drain plug partially blocked. Remove plug entirely

Question 36

Water difficult to drain

Accepted Answer

Possible cause: Hot taps not open preventing air entering hot water system. Open taps

Question 37

Water difficult to drain

Accepted Answer

Possible cause: Loops hanging in pipe runs. Refer to installation instructions.

Question 38

Reduced flow from either tap

Accepted Answer

Possible cause: Hot water back feeding into cold line, usually if mixer tap or single outlet hot and cold tap is being used. Fit non-return valve in cold supply near tap.

Question 39

Warm water flows out of cold tap

Accepted Answer

Possible cause: Pressurised water system pump switching pressure too high. Refer to water supply note

Question 40

Warm water flows out of cold tap

Accepted Answer

Possible cause: Switched tap water system pump flow rate is greater than tap flow rate capacity. Refer to water supply note

Question 41

Water pump runs on for more than 5-10 seconds after closing all taps

Accepted Answer

Possible cause: Possible leak in the system. Check the system immediately for leaks. Always switch off the pump at the control panel when leaving the vehicle.

Question 42

Aerated water from a tap

Accepted Answer

Possible cause: Possible leak on the suction side of the pump. Check the suction side of the pump for leaks.

Question 43

Flame lifting away from the burner

Accepted Answer

Possible cause: Gas pressure is too high. Recheck the regulator, cylinders and pipes and adjust as necessary.

Question 44

Yellow flame causing soot

Accepted Answer

Possible cause: Gas pressure is too low. Recheck the regulator, cylinders and pipes and adjust as necessary.

Error Code / Indicator	Symptom / Meaning	Step-by-Step DIY Fix	Suggested Actions
`N/A`	Water is not flowing from any tap when operated but the pump runs Possible Cause: The fresh water tank is empty	Check, fill.	DIY Safe
`N/A`	Water is not flowing from any tap when operated but the pump runs Possible Cause: Pump not primed	Refer to manufacturer's instructions	DIY Safe
`N/A`	Water is not flowing from any tap when operated but the pump runs Possible Cause: The pump wired in reverse	Check wiring, refer to the manufacturer's instructions	DIY Safe
`N/A`	Water is not flowing from any tap when operated but the pump runs Possible Cause: The pipe inlet or outlet is disconnected	Check connections	DIY Safe
`N/A`	Water is not flowing from any tap when operated but the pump runs Possible Cause: Pipes restricted by kinks	Check pipe runs	DIY Safe
`N/A`	Water is not flowing from any tap when operated but the pump runs Possible Cause: Blockage in pump inlet or outlet pipe	Check, starting inside the freshwater tank	DIY Safe
`N/A`	Water is not flowing from any tap when operated but the pump runs Possible Cause: Blocked in-line filter or pump filter	Dismantle and clean	DIY Safe
`N/A`	Water is not flowing from any tap when operated but the pump runs Possible Cause: Air leak in suction line to pump	Check for bubbles and secure with a clip	DIY Safe
`N/A`	Pump does not run Possible Cause: Pump or tap wired incorrectly	Refer to pump/tap manufacturer's instruction	DIY Safe
`N/A`	Pump does not run Possible Cause: Pump fuse blown	Check wiring connection then replace with fuse of correct rating.	DIY Safe
`N/A`	Pump does not run Possible Cause: Battery disconnected	Check connections	DIY Safe
`N/A`	Pump does not run Possible Cause: Pump seized or overheated	Refer to manufacturer's servicing instructions	DIY Safe
`N/A`	Pump does not run Possible Cause: If a pressure pump is being used, the pressure sensing switch may have failed	Refer to manufacturer's servicing instructions	DIY Safe
`N/A`	Pump does not run Possible Cause: If a switched tap is being used, the switch may have failed	Refer to manufacturer's servicing instructions	DIY Safe
`N/A`	Water flows from cold tap but has reduced flow from hot Possible Cause: Feed pipe to water heater is incorrectly connected to the heater outlet	Refer to installation instructions	DIY Safe
`N/A`	Water flows from cold tap but has reduced flow from hot Possible Cause: Blockage in hot pipeline	Disconnect pipes and inspect	DIY Safe
`N/A`	Water flows from cold tap but has reduced flow from hot Possible Cause: Heater inlet and outlet pipes have kinks hindering flow	Check and re-route if necessary. Ensure that hose is of recommended type.	DIY Safe
`N/A`	Water flows from cold tap but has reduced flow from hot Possible Cause: Hot tap is not connected	Refer to installation instructions	DIY Safe
`N/A`	Water flows from cold tap but has reduced flow from hot Possible Cause: Hot tap failed or blocked	Disconnect and inspect	DIY Safe
`N/A`	Water flows from cold tap but has reduced flow from hot Possible Cause: Heater non-return valve jammed	Seek service attention	Professional Intervention Required
`N/A`	Reduced flow from both hot and cold taps Possible Cause: Cold water pipe contains kinks, hindering flow	Check and re-route if necessary	DIY Safe
`N/A`	Reduced flow from both hot and cold taps Possible Cause: Blockage in cold pipe line	Disconnect pipes after first 'Y' connector and check up to tap	DIY Safe
`N/A`	Reduced flow from both hot and cold taps Possible Cause: Cold tap not connected	Refer to installation instructions	DIY Safe
`N/A`	Reduced flow from both hot and cold taps Possible Cause: Cold tap failed or blocked	Disconnect and inspect	DIY Safe
`N/A`	Reduced flow from both hot and cold taps Possible Cause: If a Carver Crystal unit is fitted, the cartridge may be exhausted	Replace cartridge	DIY Safe
`N/A`	Reduced flow from both hot and cold taps Possible Cause: Battery condition low causing pump to run slowly	Check state of charge of the battery, refer to electrical supply note	DIY Safe
`N/A`	Water flows from hot tap but has reduced flow from cold Possible Cause: If new taps have been fitted, they may be restricting the flow	Disconnect and check they have a bore of at least 6.3mm	DIY Safe
`N/A`	Water flows from hot tap but has reduced flow from cold Possible Cause: Pump needs servicing	Refer to pump servicing instructions	DIY Safe
`N/A`	Water flows from hot tap but has reduced flow from cold Possible Cause: Partly blocked pump filter or in-line filter if fitted	Dismantle and clean if necessary	DIY Safe
`N/A`	Water flows from hot tap but has reduced flow from cold Possible Cause: Pump outlet has kinks, restricting flow	Check and re-route if necessary.	DIY Safe
`N/A`	Water flows from hot tap but has reduced flow from cold Possible Cause: Water leak	Check all water connections	DIY Safe
`N/A`	Water difficult to drain Possible Cause: 'Y' connectors fitted incorrectly	Refer to installation instructions	DIY Safe
`N/A`	Water difficult to drain Possible Cause: Kinks in the pipes are restricting the flow	Check and re-route if necessary	DIY Safe
`N/A`	Water difficult to drain Possible Cause: Bore size difference in taps	Use taps of equal bore size	DIY Safe
`N/A`	Water difficult to drain Possible Cause: Drain plug partially blocked	Remove plug entirely	DIY Safe
`N/A`	Water difficult to drain Possible Cause: Hot taps not open preventing air entering hot water system	Open taps	DIY Safe
`N/A`	Water difficult to drain Possible Cause: Loops hanging in pipe runs	Refer to installation instructions.	DIY Safe
`N/A`	Reduced flow from either tap Possible Cause: Hot water back feeding into cold line, usually if mixer tap or single outlet hot and cold tap is being used	Fit non-return valve in cold supply near tap.	DIY Safe
`N/A`	Warm water flows out of cold tap Possible Cause: Pressurised water system pump switching pressure too high	Refer to water supply note	DIY Safe
`N/A`	Warm water flows out of cold tap Possible Cause: Switched tap water system pump flow rate is greater than tap flow rate capacity	Refer to water supply note	DIY Safe
`N/A`	Water pump runs on for more than 5-10 seconds after closing all taps Possible Cause: Possible leak in the system	Check the system immediately for leaks. Always switch off the pump at the control panel when leaving the vehicle.	DIY Safe
`N/A`	Aerated water from a tap Possible Cause: Possible leak on the suction side of the pump	Check the suction side of the pump for leaks.	DIY Safe
`N/A`	Flame lifting away from the burner Possible Cause: Gas pressure is too high	Recheck the regulator, cylinders and pipes and adjust as necessary.	DIY Safe
`N/A`	Yellow flame causing soot Possible Cause: Gas pressure is too low	Recheck the regulator, cylinders and pipes and adjust as necessary.	DIY Safe

Auto-Trail Owner's Handbook (2005)

Technical Specifications

Parts & Appliances Fitted

Master Troubleshooting & Diagnostics Matrix