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01-23-2022, 03:38 PM
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#1
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Junior Member
Join Date: Jan 2021
Posts: 7
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Hot Water
Hello all, I have a 2019 XLR Thunderbolt. I purchased new and since I purchased have had a problem with the hot water getting to the shower. I can get it to work by turning on the sink faucet but then I lose pressure. I have taken it to the shop 3 times and still have the problem.
Bottom line is heater works ok, if I just turn on the shower I get no hot water. If I turn on both shower and sink I can get hot water.
Need help
JFuller
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01-23-2022, 04:11 PM
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#2
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Site Team
Join Date: Nov 2010
Location: Northeast Louisiana
Posts: 33,953
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Quote:
Originally Posted by jfuller508
Hello all, I have a 2019 XLR Thunderbolt. I purchased new and since I purchased have had a problem with the hot water getting to the shower. I can get it to work by turning on the sink faucet but then I lose pressure. I have taken it to the shop 3 times and still have the problem.
Bottom line is heater works ok, if I just turn on the shower I get no hot water. If I turn on both shower and sink I can get hot water.
Need help
JFuller
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Can you tell us the make/model of your water heater?
__________________
 2011 Flagstaff 831 RLBSS
A 72 hour hold in a psych unit is beginning to intrigue me as a potential vacation opportunity.
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01-23-2022, 04:58 PM
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#3
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Junior Member
Join Date: Jan 2021
Posts: 7
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Hot Water
The book I have is a Girard Products Model GSWH-2 Tankless Water heater
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01-23-2022, 04:59 PM
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#4
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 19,146
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Quote:
Originally Posted by wmtire
Can you tell us the make/model of your water heater?
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X2.
Many on-demand type water heaters need a specific flow rate for the water heater to fire.
It could be you don't have enough flow just from the shower. Many shower heads/faucets are restricted purposely to conserve water.
__________________
2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2024 Ford F-Series SCREW•7.3L•4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA
Days Camped ☼ '19=118 ☼ '20=116 ☼ '21=123 ☼ '22=134 ☼ '23=118☼ '24=90
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01-23-2022, 05:18 PM
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#5
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Junior Member
Join Date: Jan 2021
Posts: 7
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Thank you for your response. It has always been this way no matter where I hook up since I purchased the RV. I do have a regulator on the RV at the inlet. Maybe it is my shower head.
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01-23-2022, 05:30 PM
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#6
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Retired Army MSG!
Join Date: Feb 2015
Location: Sharon, SC
Posts: 596
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Remove your shower head and try with just the shower on only and see if you get hot water then. It could be your shower head is a water saver and not allowing enough flow rate for the on demand water heater to kick on. If you get hot water at least you know you can purchase higher flow shower head to meet your needs.
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01-23-2022, 07:29 PM
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#7
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 19,146
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Quote:
Originally Posted by jfuller508
Thank you for your response. It has always been this way no matter where I hook up since I purchased the RV. I do have a regulator on the RV at the inlet. Maybe it is my shower head.
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Sometimes the flow restriction is the shower head itself (depending on internal design) sometimes there is a flow restriction washer either where the shower head connects to the flex hose and sometimes the flow restriction washer is where the flex hose attaches to the shower faucet.
Many folks either remove the restrictor washer or drill the restriction hole larger.
__________________
2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2024 Ford F-Series SCREW•7.3L•4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA
Days Camped ☼ '19=118 ☼ '20=116 ☼ '21=123 ☼ '22=134 ☼ '23=118☼ '24=90
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01-24-2022, 06:51 AM
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#8
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Junior Member
Join Date: Jan 2021
Posts: 7
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Thank you, I removed the shower head and just turned the hot water on. Still same. Hot water heater did not kick on. Turn on the sink and it did. Shower head is not the issue.
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01-24-2022, 08:05 AM
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#9
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Senior Member
Join Date: Jun 2012
Location: Southern NM
Posts: 9,563
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Quote:
Originally Posted by jfuller508
Thank you, I removed the shower head and just turned the hot water on. Still same. Hot water heater did not kick on. Turn on the sink and it did. Shower head is not the issue.
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Next I would check the shower hot water valve, diverter mechanism, and shower head hose connection if you have one. Some have restrictors/screens in them.
If all is clear, start looking for kinked pex lines.
If all else fails, call Girard tech support.
__________________
Scott and Liz - Southern NM
2012 Wildcat Sterling 32RL - w/level up (best option ever)
2007 Chevy 2500HD Duramax
Reese Fifth Airborne Sidewinder
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02-01-2022, 08:30 AM
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#10
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Junior Member
Join Date: Jan 2021
Posts: 7
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Good morning, wanted to thank you guys for your advice and input. I put a regulator with a pressure gauge and removed the water filter and my shower hot water came on immediately and had more pressure.
It was 100% pressure related.
Thank you
Jack Fuller
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02-01-2022, 09:27 AM
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#11
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Site Team
Join Date: Nov 2010
Location: Northeast Louisiana
Posts: 33,953
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Quote:
Originally Posted by jfuller508
Good morning, wanted to thank you guys for your advice and input. I put a regulator with a pressure gauge and removed the water filter and my shower hot water came on immediately and had more pressure.
It was 100% pressure related.
Thank you
Jack Fuller
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Good deal.
Sent from my LM-X320 using Forest River Forums mobile app
__________________
2011 Flagstaff 831 RLBSS
A 72 hour hold in a psych unit is beginning to intrigue me as a potential vacation opportunity.
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02-01-2022, 06:53 PM
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#12
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Senior Member
Join Date: Jul 2017
Location: North of Seattle, WA
Posts: 17,354
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Since the problem stopped when filter was removed it's highly likely the filter was clogged.
__________________
"A wise man can change his mind. A fool never will." (Japanese Proverb)
"You only grow old when you run out of new things to do"
2018 Flagstaff Micro Lite 25BDS
2023 f-150 SCREW XLT 3.5 Ecoboost (The result of a $68,000 oil change  )
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